高一数学的y=f(x)到底什么意思 高一数学里，y=x和y=f(x)的区别是什么？谢谢
\u9ad8\u4e00\u6570\u5b66y=f(x)\u4e2df(x)\u4e2d\u7684f\u662f\u4ec0\u4e48\u610f\u601d\uff1f\u6211\u4e0d\u660e\u767d\u8fd9\u5176\u4e2d\u610f\u601d\u3002\u8fd8\u6709\u95ee\u4e00\u4e2a\u4e0d\u76f8\u5e72\u7684\u95ee\u9898\uff0c\u9ad8\u4e2d\u6570\u5b66\u96be\u5417\uff1ff\u5c31\u662f\u4ece\u96c6\u5408x\u6620\u5c04\u5230\u96c6\u5408y\u7684\u5bf9\u5e94\u6cd5\u5219\uff0c\u8fd9\u4e2a\u5728\u51fd\u6570\u7684\u5b9a\u4e49\u91cc\u9762\u6709\uff0c\u9ad8\u4e2d\u6570\u5b66\u7528\u5fc3\u5b66\u7684\u8bdd\uff0c\u4e0d\u7b97\u592a\u96be
y=f(x)\u662f\u5bf9\u6240\u6709\u7684\u51fd\u6570\u7684\u4e00\u79cd\u8868\u793a\uff0c\u610f\u601d\u662fy=function(x)=x\u7684\u51fd\u6570\uff0c\u4f46\u8fd9\u4e2a\u51fd\u6570\u7684\u5177\u4f53\u7684\u5f0f\u5b50\u6ca1\u6709\u8868\u8fbe\u51fa\u6765\uff0c
\u5982\u679c\u4e00\u4e2a\u5177\u4f53\u7684\u51fd\u6570\u662fy=2x, \u6211\u4eec\u4e5f\u53ef\u4ee5\u5199\u6210f(x)=2x, \u5de6\u8fb9\u7684\u8fd9\u4e2af(x)\u662f\u4e00\u4e2a\u76f8\u5f53\u597d\u7684\u7b26\u53f7\uff0c\u5f53x=3\u65f6\uff0cy=2*3=6, \u8fd9\u53e5\u8bdd\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u8fd9\u4e2a\u7b26\u53f7\u5199\u6210f(3)=6,
y=x\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u4e00\u6b21\u51fd\u6570\u3002
\u6240\u4ee5\u4e24\u8005\u662f\u4e0d\u540c\u7684\u6982\u5ff5\uff0c\u662f\u6709\u5f88\u5927\u7684\u533a\u522b\u7684\u3002
关于x的法则f对应的值y
绛旓細灏辨槸鍑芥暟鍊煎煙鐨勮〃绀哄晩锛屽嵆y=锛屽洜涓烘湁鐨勬椂鍊欒缁檟璧嬪硷紝濡倅=f(x)=2x,鍒檉(6)=12,杩欐椂鐢▂灏变笉濂借〃绀哄嚭x鐨勫叿浣撳
绛旓細f(x) 鏄竴绉嶅嚱鏁板叧绯荤殑璁板彿锛宖(x)鍜寉鑷彉閲忎笉鍚屻倅鍜宖(x)鐨勫尯鍒湪浜庯紝鍙互寰堢洿瑙傚湴鐪嬪嚭f(x)鐨勮嚜鍙橀噺鏄痻锛岃寉鐨勮嚜鍙橀噺鍗翠笉鐭ラ亾锛屽洜涓哄彲鑳芥槸y=k 1锛岄偅鑷彉閲忓氨鏄痥浜嗐傛墍浠ョ敤f(x)鏇磋兘琛ㄨ揪鍑鸿嚜鍙橀噺鍜屽洜鍙橀噺鐨勫叧绯汇俧(x)鏄珮涓鏁板涓殑鐭ヨ瘑鐐癸紝閫氬父缁欏畾涓涓潪绌虹殑鏁伴泦A,瀵笰鏂藉姞瀵瑰簲娉曞垯f,...
绛旓細杩欓噷 X Y閮戒唬琛ㄦ湭鐭ユ暟 鑰f()浠ｈ〃鐨勬槸閫氳繃涓瀹氱殑璁＄畻杩囩▼ 鏁翠釜鎰忔濆氨鏄痀鏄氳繃X缁忚繃涓瀹氱殑璁＄畻杩囩▼寰楁潵鐨 f锛欰鈫払 杩欎釜F鍚屾牱鎸囪绠楄繃绋 A B灏卞ソ姣斿垰鎵嶈鐨刋 Y 閮芥槸鏈煡鏁 閫氳繃绠ご 鍙互鐞嗚В涓 浠鐨勮绠楁柟寮 鐢辨湭鐭ユ暟A璁＄畻鎴愪负鏈煡鏁癇 ...
绛旓細鍑芥暟 f(x) 鐨勬剰鎬濇槸锛氳鍑芥暟浠 x 涓哄彉閲忥紝瀵硅嚜鍙橀噺x鐨勬瘡涓涓彇鍊硷紝鍥犲彉閲y=f(x)閮芥湁鍞竴鐨勫煎搴斻傛崲鍙ヨ瘽璇村氨鏄紝杩欐槸涓涓互 x 涓哄彉閲忕殑鍑芥暟銆
绛旓細f锛坸锛夋槸涓涓互x涓鸿嚜鍙橀噺鐨勫嚱鏁般傜粰瀹氫竴涓暟闆咥锛屽亣璁惧叾涓殑鍏冪礌涓簒銆傜幇瀵笰涓殑鍏冪礌x鏂藉姞瀵瑰簲娉曞垯f锛岃浣渇锛坸锛夛紝寰楀埌鍙︿竴鏁伴泦B銆傚亣璁綛涓殑鍏冪礌涓簓銆傚垯y涓巟涔嬮棿鐨勭瓑閲忓叧绯诲彲浠ョ敤y=f锛坸锛琛ㄧず銆備緥濡傦細y=x锛屼篃鍙啓鎴恌锛坸锛=x锛屾剰鎬濇槸涓鏍风殑銆俧锛坅锛=0锛屾槸璇磋繖涓嚱鏁癴锛坸锛変腑锛屽綋x=a...
绛旓細y=f(x)鏄鎵鏈夌殑鍑芥暟鐨勪竴绉嶈〃绀猴紝鎰忔濇槸y=function(x)=x鐨勫嚱鏁帮紝浣嗚繖涓嚱鏁扮殑鍏蜂綋鐨勫紡瀛愭病鏈夎〃杈惧嚭鏉ワ紝濡傛灉涓涓叿浣撶殑鍑芥暟鏄痽=2x, 鎴戜滑涔熷彲浠ュ啓鎴恌(x)=2x, 宸﹁竟鐨勮繖涓猣(x)鏄竴涓浉褰撳ソ鐨勭鍙凤紝褰搙=3鏃讹紝y=2*3=6, 杩欏彞璇濓紝鎴戜滑鍙互鐢ㄨ繖涓鍙峰啓鎴恌(3)=6,y=x鏄竴涓叿浣撶殑涓娆...
绛旓細f(x)鏄竴涓互x涓鸿嚜鍙橀噺鐨勫嚱鏁帮紝渚嬪锛y=x锛屼篃鍙啓鎴恌(x)=x锛屾剰鎬濇槸涓鏍风殑銆俧(a)=0锛屾槸璇磋繖涓嚱鏁癴(x)涓紝褰搙=a鏃讹紝鍑芥暟鍊间负0 鍥犲紡瀹氱悊灏辨槸鎵炬弧瓒砯(a)=0鏉′欢涓殑a锛岃繖涓壘鐨勮繃绋嬪彲浠ュ彛绠椼備箣鍚庤鍥犲紡涓氨鏈墄-a杩欎釜鍥犲紡浜嗭紙鍥犱负褰搙=a鏃讹紝f(a)=0锛屽嵆x-a=0鏃讹紝f(a)=0锛夛紝...
绛旓細f锛坸锛夌畝鍗曠偣鎶婁粬鐪嬪仛涓涓湭鐭ユ暟涓簒鐨勬柟绋嬶紝鎶婁粬褰撴垚y銆傘傛瘮濡y=f锛坸锛=4x锛寉=f锛坸锛=2鏃讹紝4x=2锛寈=0.5.銆倅=f锛坸锛=3鏃讹紝锛4x=3锛岋紝x=3/4.銆
绛旓細f(x)鏄竴涓嚱鏁帮紝绫讳技浜庝竴娆″嚱鏁帮紝浜屾鍑芥暟閲岄潰鐨剏锛屽f(x)=4x+5鍜y=4x+5 鏄竴涓剰鎬濄傛崲鍏冩硶锛氬彲浠ユ暣浣撴崲鍏冧篃鍙互鍗曚釜鎹㈠厓锛岄兘鏄负浜嗚绠楃畝渚裤備功涓婂簲璇ヨ鐨勫緢璇︾粏銆傝繖涓〃杩版竻妤氳鎵撳緢澶氬瓧銆傛湁浠涔涓嶄細鐨勫彲浠ョ涓嬭亰锛屾垜qq923620383.
绛旓細f(x)鏄竴涓暣浣擄紝鍏跺疄灏辨槸鎴戜滑涔嬪墠瀛鐨剏鍊笺備竴涓嚱鏁帮紝瀛樺湪鑷彉閲弜浠ュ強鍥犲彉閲弝銆傝繖閲岀殑f(x)灏辨槸浠ｆ浛浜嗚繖涓獃鍊笺俧(x)琛ㄧず浠涓鸿嚜鍙橀噺鐨勪竴涓嚱鏁帮紝瀹冨彲浠ユ湁浠讳綍鐨勫搴旀硶鍒欙紝濡f(x)锛x鎴杅(x)锛2x绛夌瓑銆傝繖涓搴斿叧绯绘槸浠绘剰鐨勶紝浣犲彲浠ヤ换鎰忚瀹氥傞鐩腑璇存槸浠涔灏辨槸浠涔堛備綘鎵璇寸殑杩欓亾棰樼洰鏄繖鏍...
