å¤åå½æ°çå®ä¹åç±å
å±å½æ°åå¤å±å½æ°å
±åç¡®å®çã
å·²ç¥
y=f(x)
u=g(x)
åf(g(x))称为ç±f(x)åg(x)å¤åèæçå¤åå½æ°ï¼å
¶ä¸f(x)称å¤å±å½æ°ï¼g(x)称å
å±å½æ°ã
è¥å·²ç¥f(x)çå®ä¹å为(a,b)ï¼æ±f(g(x))çå®ä¹åï¼
ååªéè¦ä½¿a<g(x)<bï¼
å
¶è§£éå³ä¸ºf(g(x))çå®ä¹åï¼
è¥å·²ç¥f(g(x))çå®ä¹å为(p, q), æ±f(x)çå®ä¹åï¼
åç±p<x<qï¼å¯æ±åºg(x)çèå´ï¼åg(x)çèå´å³ä¸ºf(x)çå®ä¹åã
æ»ç»ï¼å½æ°f(x)ï¼f(g(x))ï¼f(h(x))çå½æ°æå¤åå½æ°ï¼åªè¦åé¢å¯¹åºæ³åfç¸åï¼åå®ä¹åçæ±æ³ä¸ºï¼å¯¹åºæ³åfåé¢æ¬å·å
ç表达å¼çåå¼èå´ç¸åï¼å³å¯æ±åºxçèå´ï¼å³ä¸ºå®ä¹åã
温馨提示:答案为网友推荐,仅供参考