达信六分区三线合一主图指标公式怎么带入软件公式里边去要步骤
\u6c42\u521d\u4e2d\u4e00\u5143\u4e8c\u6b21\u51fd\u6570\u7684\u5206\u7c7b.\u56fe\u50cf.\u516c\u5f0f\u4e00\u822c\u5730\uff0c\u81ea\u53d8\u91cfx\u548c\u56e0\u53d8\u91cfy\u4e4b\u95f4\u5b58\u5728\u5982\u4e0b\u5173\u7cfb\uff1a
y=ax^2+bx+c
\uff08a\uff0cb\uff0cc\u4e3a\u5e38\u6570\uff0ca\u22600\uff0c\u4e14a\u51b3\u5b9a\u51fd\u6570\u7684\u5f00\u53e3\u65b9\u5411\uff0ca>0\u65f6\uff0c\u5f00\u53e3\u65b9\u5411\u5411\u4e0a\uff0ca<0\u65f6\uff0c\u5f00\u53e3\u65b9\u5411\u5411\u4e0b\u3002IaI\u8fd8\u53ef\u4ee5\u51b3\u5b9a\u5f00\u53e3\u5927\u5c0f,IaI\u8d8a\u5927\u5f00\u53e3\u5c31\u8d8a\u5c0f,IaI\u8d8a\u5c0f\u5f00\u53e3\u5c31\u8d8a\u5927\u3002\uff09
\u5219\u79f0y\u4e3ax\u7684\u4e8c\u6b21\u51fd\u6570\u3002
\u4e8c\u6b21\u51fd\u6570\u8868\u8fbe\u5f0f\u7684\u53f3\u8fb9\u901a\u5e38\u4e3a\u4e8c\u6b21\u4e09\u9879\u5f0f\u3002
x\u662f\u81ea\u53d8\u91cf\uff0cy\u662fx\u7684\u51fd\u6570
[\u7f16\u8f91\u672c\u6bb5]\u4e8c\u6b21\u51fd\u6570\u7684\u4e09\u79cd\u8868\u8fbe\u5f0f
\u2460\u4e00\u822c\u5f0f\uff1ay=ax^2+bx+c(a,b,c\u4e3a\u5e38\u6570,a\u22600)
\u2461\u9876\u70b9\u5f0f[\u629b\u7269\u7ebf\u7684\u9876\u70b9 P(h\uff0ck) ]\uff1ay=a(x-h)^2+k
\u2462\u4ea4\u70b9\u5f0f[\u4ec5\u9650\u4e8e\u4e0ex\u8f74\u6709\u4ea4\u70b9 A(x1,0) \u548c B(x2,0) \u7684\u629b\u7269\u7ebf]\uff1ay=a(x-x1)(x-x2)
\u4ee5\u4e0a3\u79cd\u5f62\u5f0f\u53ef\u8fdb\u884c\u5982\u4e0b\u8f6c\u5316\uff1a
\u2460\u4e00\u822c\u5f0f\u548c\u9876\u70b9\u5f0f\u7684\u5173\u7cfb
\u5bf9\u4e8e\u4e8c\u6b21\u51fd\u6570y=ax^2+bx+c\uff0c\u5176\u9876\u70b9\u5750\u6807\u4e3a(-b/2a,(4ac-b^2)/4a)\uff0c\u5373
h=-b/2a=(x1+x2)/2
k=(4ac-b^2)/4a
\u2461\u4e00\u822c\u5f0f\u548c\u4ea4\u70b9\u5f0f\u7684\u5173\u7cfb
x1,x2=[-b\u00b1\u221a(b^2-4ac)]/2a(\u5373\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u6c42\u6839\u516c\u5f0f)
[\u7f16\u8f91\u672c\u6bb5]\u4e8c\u6b21\u51fd\u6570\u7684\u56fe\u50cf
\u5728\u5e73\u9762\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\u4f5c\u51fa\u4e8c\u6b21\u51fd\u6570y=x^2\u7684\u56fe\u50cf\uff0c
\u53ef\u4ee5\u770b\u51fa\uff0c\u4e8c\u6b21\u51fd\u6570\u7684\u56fe\u50cf\u662f\u4e00\u6761\u6c38\u65e0\u6b62\u5883\u7684\u629b\u7269\u7ebf\u3002
[\u7f16\u8f91\u672c\u6bb5]\u629b\u7269\u7ebf\u7684\u6027\u8d28
1.\u629b\u7269\u7ebf\u662f\u8f74\u5bf9\u79f0\u56fe\u5f62\u3002\u5bf9\u79f0\u8f74\u4e3a\u76f4\u7ebfx = -b/2a\u3002
\u5bf9\u79f0\u8f74\u4e0e\u629b\u7269\u7ebf\u552f\u4e00\u7684\u4ea4\u70b9\u4e3a\u629b\u7269\u7ebf\u7684\u9876\u70b9P\u3002
\u7279\u522b\u5730\uff0c\u5f53b=0\u65f6\uff0c\u629b\u7269\u7ebf\u7684\u5bf9\u79f0\u8f74\u662fy\u8f74\uff08\u5373\u76f4\u7ebfx=0\uff09
2.\u629b\u7269\u7ebf\u6709\u4e00\u4e2a\u9876\u70b9P\uff0c\u5750\u6807\u4e3aP ( -b/2a \uff0c(4ac-b^2)/4a )
\u5f53-b/2a=0\u65f6\uff0cP\u5728y\u8f74\u4e0a\uff1b\u5f53\u0394= b^2-4ac=0\u65f6\uff0cP\u5728x\u8f74\u4e0a\u3002
3.\u4e8c\u6b21\u9879\u7cfb\u6570a\u51b3\u5b9a\u629b\u7269\u7ebf\u7684\u5f00\u53e3\u65b9\u5411\u548c\u5927\u5c0f\u3002
\u5f53a\uff1e0\u65f6\uff0c\u629b\u7269\u7ebf\u5411\u4e0a\u5f00\u53e3\uff1b\u5f53a\uff1c0\u65f6\uff0c\u629b\u7269\u7ebf\u5411\u4e0b\u5f00\u53e3\u3002
|a|\u8d8a\u5927\uff0c\u5219\u629b\u7269\u7ebf\u7684\u5f00\u53e3\u8d8a\u5c0f\u3002
4.\u4e00\u6b21\u9879\u7cfb\u6570b\u548c\u4e8c\u6b21\u9879\u7cfb\u6570a\u5171\u540c\u51b3\u5b9a\u5bf9\u79f0\u8f74\u7684\u4f4d\u7f6e\u3002
\u5f53a\u4e0eb\u540c\u53f7\u65f6\uff08\u5373ab\uff1e0\uff09\uff0c\u5bf9\u79f0\u8f74\u5728y\u8f74\u5de6\uff1b
\u5f53a\u4e0eb\u5f02\u53f7\u65f6\uff08\u5373ab\uff1c0\uff09\uff0c\u5bf9\u79f0\u8f74\u5728y\u8f74\u53f3\u3002
5.\u5e38\u6570\u9879c\u51b3\u5b9a\u629b\u7269\u7ebf\u4e0ey\u8f74\u4ea4\u70b9\u3002
\u629b\u7269\u7ebf\u4e0ey\u8f74\u4ea4\u4e8e\uff080\uff0cc\uff09
6.\u629b\u7269\u7ebf\u4e0ex\u8f74\u4ea4\u70b9\u4e2a\u6570
\u0394= b^2-4ac\uff1e0\u65f6\uff0c\u629b\u7269\u7ebf\u4e0ex\u8f74\u67092\u4e2a\u4ea4\u70b9\u3002
\u0394= b^2-4ac=0\u65f6\uff0c\u629b\u7269\u7ebf\u4e0ex\u8f74\u67091\u4e2a\u4ea4\u70b9\u3002
_______
\u0394= b^2-4ac\uff1c0\u65f6\uff0c\u629b\u7269\u7ebf\u4e0ex\u8f74\u6ca1\u6709\u4ea4\u70b9\u3002X\u7684\u53d6\u503c\u662f\u865a\u6570\uff08x= -b\u00b1\u221ab^2\uff0d4ac \u7684\u503c\u7684\u76f8\u53cd\u6570\uff0c\u4e58\u4e0a\u865a\u6570i\uff0c\u6574\u4e2a\u5f0f\u5b50\u9664\u4ee52a\uff09
\u5f53a>0\u65f6\uff0c\u51fd\u6570\u5728x= -b/2a\u5904\u53d6\u5f97\u6700\u5c0f\u503cf(-b/2a)=4ac-b^2/4a\uff1b\u5728{x|x-b/2a}\u4e0a\u662f\u589e\u51fd\u6570\uff1b\u629b\u7269\u7ebf\u7684\u5f00\u53e3\u5411\u4e0a\uff1b\u51fd\u6570\u7684\u503c\u57df\u662f{y|y\u22654ac-b^2/4a}\u76f8\u53cd\u4e0d\u53d8
\u5f53b=0\u65f6\uff0c\u629b\u7269\u7ebf\u7684\u5bf9\u79f0\u8f74\u662fy\u8f74\uff0c\u8fd9\u65f6\uff0c\u51fd\u6570\u662f\u5076\u51fd\u6570\uff0c\u89e3\u6790\u5f0f\u53d8\u5f62\u4e3ay=ax^2+c(a\u22600)
7.\u5b9a\u4e49\u57df\uff1aR
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\u5947\u5076\u6027\uff1a\u5076\u51fd\u6570
\u5468\u671f\u6027\uff1a\u65e0
\u89e3\u6790\u5f0f\uff1a
\u2460y=ax^2+bx+c[\u4e00\u822c\u5f0f]
\u2474a\u22600
\u2475a\uff1e0\uff0c\u5219\u629b\u7269\u7ebf\u5f00\u53e3\u671d\u4e0a\uff1ba\uff1c0\uff0c\u5219\u629b\u7269\u7ebf\u5f00\u53e3\u671d\u4e0b\uff1b
\u2476\u6781\u503c\u70b9\uff1a\uff08-b/2a\uff0c(4ac-b^2)/4a\uff09\uff1b
\u2477\u0394=b^2-4ac,
\u0394\uff1e0\uff0c\u56fe\u8c61\u4e0ex\u8f74\u4ea4\u4e8e\u4e24\u70b9\uff1a
\uff08[-b+\u221a\u0394]/2a\uff0c0\uff09\u548c\uff08[-b+\u221a\u0394]/2a\uff0c0\uff09\uff1b
\u0394\uff1d0\uff0c\u56fe\u8c61\u4e0ex\u8f74\u4ea4\u4e8e\u4e00\u70b9\uff1a
\uff08-b/2a\uff0c0\uff09\uff1b
\u0394\uff1c0\uff0c\u56fe\u8c61\u4e0ex\u8f74\u65e0\u4ea4\u70b9\uff1b
\u2461y=a(x-h)^2+t[\u914d\u65b9\u5f0f]
\u6b64\u65f6\uff0c\u5bf9\u5e94\u6781\u503c\u70b9\u4e3a\uff08h\uff0ct\uff09\uff0c\u5176\u4e2dh=-b/2a\uff0ct=(4ac-b^2)/4a\uff09\uff1b
[\u7f16\u8f91\u672c\u6bb5]\u4e8c\u6b21\u51fd\u6570\u4e0e\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b
\u7279\u522b\u5730\uff0c\u4e8c\u6b21\u51fd\u6570\uff08\u4ee5\u4e0b\u79f0\u51fd\u6570\uff09y=ax^2+bx+c\uff0c
\u5f53y=0\u65f6\uff0c\u4e8c\u6b21\u51fd\u6570\u4e3a\u5173\u4e8ex\u7684\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\uff08\u4ee5\u4e0b\u79f0\u65b9\u7a0b\uff09\uff0c
\u5373ax^2+bx+c=0
\u6b64\u65f6\uff0c\u51fd\u6570\u56fe\u50cf\u4e0ex\u8f74\u6709\u65e0\u4ea4\u70b9\u5373\u65b9\u7a0b\u6709\u65e0\u5b9e\u6570\u6839\u3002
\u51fd\u6570\u4e0ex\u8f74\u4ea4\u70b9\u7684\u6a2a\u5750\u6807\u5373\u4e3a\u65b9\u7a0b\u7684\u6839\u3002
1\uff0e\u4e8c\u6b21\u51fd\u6570y=ax^2\uff0cy=a(x-h)^2\uff0cy=a(x-h)^2 +k\uff0cy=ax^2+bx+c(\u5404\u5f0f\u4e2d\uff0ca\u22600)\u7684\u56fe\u8c61\u5f62\u72b6\u76f8\u540c\uff0c\u53ea\u662f\u4f4d\u7f6e\u4e0d\u540c\uff0c\u5b83\u4eec\u7684\u9876\u70b9\u5750\u6807\u53ca\u5bf9\u79f0\u8f74\u5982\u4e0b\u8868\uff1a
\u89e3\u6790\u5f0f
y=ax^2
y=a(x-h)^2
y=a(x-h)^2+k
y=ax^2+bx+c
\u9876\u70b9\u5750\u6807
(0\uff0c0)
(h\uff0c0)
(h\uff0ck)
(-b/2a\uff0csqrt[4ac-b^2]/4a)
\u5bf9 \u79f0 \u8f74
x=0
x=h
x=h
x=-b/2a
\u5f53h>0\u65f6\uff0cy=a(x-h)^2\u7684\u56fe\u8c61\u53ef\u7531\u629b\u7269\u7ebfy=ax^2\u5411\u53f3\u5e73\u884c\u79fb\u52a8h\u4e2a\u5355\u4f4d\u5f97\u5230\uff0c
\u5f53h<0\u65f6\uff0c\u5219\u5411\u5de6\u5e73\u884c\u79fb\u52a8|h|\u4e2a\u5355\u4f4d\u5f97\u5230\uff0e
\u5f53h>0,k>0\u65f6\uff0c\u5c06\u629b\u7269\u7ebfy=ax^2\u5411\u53f3\u5e73\u884c\u79fb\u52a8h\u4e2a\u5355\u4f4d\uff0c\u518d\u5411\u4e0a\u79fb\u52a8k\u4e2a\u5355\u4f4d\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230y=a(x-h)^2+k\u7684\u56fe\u8c61\uff1b
\u5f53h>0,k<0\u65f6\uff0c\u5c06\u629b\u7269\u7ebfy=ax^2\u5411\u53f3\u5e73\u884c\u79fb\u52a8h\u4e2a\u5355\u4f4d\uff0c\u518d\u5411\u4e0b\u79fb\u52a8|k|\u4e2a\u5355\u4f4d\u53ef\u5f97\u5230y=a(x-h)^2+k\u7684\u56fe\u8c61\uff1b
\u5f53h0\u65f6\uff0c\u5c06\u629b\u7269\u7ebf\u5411\u5de6\u5e73\u884c\u79fb\u52a8|h|\u4e2a\u5355\u4f4d\uff0c\u518d\u5411\u4e0a\u79fb\u52a8k\u4e2a\u5355\u4f4d\u53ef\u5f97\u5230y=a(x-h)^2+k\u7684\u56fe\u8c61\uff1b
\u5f53h<0,k<0\u65f6\uff0c\u5c06\u629b\u7269\u7ebf\u5411\u5de6\u5e73\u884c\u79fb\u52a8|h|\u4e2a\u5355\u4f4d\uff0c\u518d\u5411\u4e0b\u79fb\u52a8|k|\u4e2a\u5355\u4f4d\u53ef\u5f97\u5230y=a(x-h)^2+k\u7684\u56fe\u8c61\uff1b
\u56e0\u6b64\uff0c\u7814\u7a76\u629b\u7269\u7ebf y=ax^2+bx+c(a\u22600)\u7684\u56fe\u8c61\uff0c\u901a\u8fc7\u914d\u65b9\uff0c\u5c06\u4e00\u822c\u5f0f\u5316\u4e3ay=a(x-h)^2+k\u7684\u5f62\u5f0f\uff0c\u53ef\u786e\u5b9a\u5176\u9876\u70b9\u5750\u6807\u3001\u5bf9\u79f0\u8f74\uff0c\u629b\u7269\u7ebf\u7684\u5927\u4f53\u4f4d\u7f6e\u5c31\u5f88\u6e05\u695a\u4e86\uff0e\u8fd9\u7ed9\u753b\u56fe\u8c61\u63d0\u4f9b\u4e86\u65b9\u4fbf\uff0e
2\uff0e\u629b\u7269\u7ebfy=ax^2+bx+c(a\u22600)\u7684\u56fe\u8c61\uff1a\u5f53a>0\u65f6\uff0c\u5f00\u53e3\u5411\u4e0a\uff0c\u5f53a<0\u65f6\u5f00\u53e3\u5411\u4e0b\uff0c\u5bf9\u79f0\u8f74\u662f\u76f4\u7ebfx=-b/2a\uff0c\u9876\u70b9\u5750\u6807\u662f(-b/2a\uff0c[4ac-b^2]/4a)\uff0e
3\uff0e\u629b\u7269\u7ebfy=ax^2+bx+c(a\u22600)\uff0c\u82e5a>0\uff0c\u5f53x \u2264 -b/2a\u65f6\uff0cy\u968fx\u7684\u589e\u5927\u800c\u51cf\u5c0f\uff1b\u5f53x \u2265 -b/2a\u65f6\uff0cy\u968fx\u7684\u589e\u5927\u800c\u589e\u5927\uff0e\u82e5a<0\uff0c\u5f53x \u2264 -b/2a\u65f6\uff0cy\u968fx\u7684\u589e\u5927\u800c\u589e\u5927\uff1b\u5f53x \u2265 -b/2a\u65f6\uff0cy\u968fx\u7684\u589e\u5927\u800c\u51cf\u5c0f\uff0e
4\uff0e\u629b\u7269\u7ebfy=ax^2+bx+c\u7684\u56fe\u8c61\u4e0e\u5750\u6807\u8f74\u7684\u4ea4\u70b9\uff1a
(1)\u56fe\u8c61\u4e0ey\u8f74\u4e00\u5b9a\u76f8\u4ea4\uff0c\u4ea4\u70b9\u5750\u6807\u4e3a(0\uff0cc)\uff1b
(2)\u5f53\u25b3=b^2-4ac>0\uff0c\u56fe\u8c61\u4e0ex\u8f74\u4ea4\u4e8e\u4e24\u70b9A(x₁\uff0c0)\u548cB(x₂\uff0c0)\uff0c\u5176\u4e2d\u7684x1,x2\u662f\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0bax^2+bx+c=0
(a\u22600)\u7684\u4e24\u6839\uff0e\u8fd9\u4e24\u70b9\u95f4\u7684\u8ddd\u79bbAB=|x₂-x₁| \u53e6\u5916\uff0c\u629b\u7269\u7ebf\u4e0a\u4efb\u4f55\u4e00\u5bf9\u5bf9\u79f0\u70b9\u7684\u8ddd\u79bb\u53ef\u4ee5\u7531|2\u00d7\uff08-b/2a\uff09\uff0dA |\uff08A\u4e3a\u5176\u4e2d\u4e00\u70b9\u7684\u6a2a\u5750\u6807\uff09
\u5f53\u25b3=0\uff0e\u56fe\u8c61\u4e0ex\u8f74\u53ea\u6709\u4e00\u4e2a\u4ea4\u70b9\uff1b
\u5f53\u25b30\u65f6\uff0c\u56fe\u8c61\u843d\u5728x\u8f74\u7684\u4e0a\u65b9\uff0cx\u4e3a\u4efb\u4f55\u5b9e\u6570\u65f6\uff0c\u90fd\u6709y>0\uff1b\u5f53a<0\u65f6\uff0c\u56fe\u8c61\u843d\u5728x\u8f74\u7684\u4e0b\u65b9\uff0cx\u4e3a\u4efb\u4f55\u5b9e\u6570\u65f6\uff0c\u90fd\u6709y<0\uff0e
5\uff0e\u629b\u7269\u7ebfy=ax^2+bx+c\u7684\u6700\u503c\uff1a\u5982\u679ca>0(a<0)\uff0c\u5219\u5f53x= -b/2a\u65f6\uff0cy\u6700\u5c0f(\u5927)\u503c=(4ac-b^2)/4a\uff0e
\u9876\u70b9\u7684\u6a2a\u5750\u6807\uff0c\u662f\u53d6\u5f97\u6700\u503c\u65f6\u7684\u81ea\u53d8\u91cf\u503c\uff0c\u9876\u70b9\u7684\u7eb5\u5750\u6807\uff0c\u662f\u6700\u503c\u7684\u53d6\u503c\uff0e
6\uff0e\u7528\u5f85\u5b9a\u7cfb\u6570\u6cd5\u6c42\u4e8c\u6b21\u51fd\u6570\u7684\u89e3\u6790\u5f0f
(1)\u5f53\u9898\u7ed9\u6761\u4ef6\u4e3a\u5df2\u77e5\u56fe\u8c61\u7ecf\u8fc7\u4e09\u4e2a\u5df2\u77e5\u70b9\u6216\u5df2\u77e5x\u3001y\u7684\u4e09\u5bf9\u5bf9\u5e94\u503c\u65f6\uff0c\u53ef\u8bbe\u89e3\u6790\u5f0f\u4e3a\u4e00\u822c\u5f62\u5f0f\uff1a
y=ax^2+bx+c(a\u22600)\uff0e
(2)\u5f53\u9898\u7ed9\u6761\u4ef6\u4e3a\u5df2\u77e5\u56fe\u8c61\u7684\u9876\u70b9\u5750\u6807\u6216\u5bf9\u79f0\u8f74\u65f6\uff0c\u53ef\u8bbe\u89e3\u6790\u5f0f\u4e3a\u9876\u70b9\u5f0f\uff1ay=a(x-h)^2+k(a\u22600)\uff0e
(3)\u5f53\u9898\u7ed9\u6761\u4ef6\u4e3a\u5df2\u77e5\u56fe\u8c61\u4e0ex\u8f74\u7684\u4e24\u4e2a\u4ea4\u70b9\u5750\u6807\u65f6\uff0c\u53ef\u8bbe\u89e3\u6790\u5f0f\u4e3a\u4e24\u6839\u5f0f\uff1ay=a(x-x₁)(x-x₂)(a\u22600)\uff0e
VARF:=TROUGHBARS(3,15,1)<4;
\u795e\u63a2:FILTER(VARF=1,3);
\u516c\u5f0f\u4e2d\u4f7f\u7528\u4e86\u672a\u6765\u51fd\u6570
\u795d\uff1a\u9a6c\u5e74\u6295\u8d44\u987a\u5229\uff01
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