推 Webb17:in terms of variable y only這句的意思是? 122.127.40.221 07/04 22:34
→ Webb17:第一個式子看不太懂 ... 122.127.40.221 07/04 22:38
推 JULIKEBEN:應該是要把x都換成用y表達吧 118.169.98.243 07/05 15:51
※ 引述《ggyy340 (阿甘)》之銘言：
: Given y=[tan(x+y)]^2 ,use implicit differentiation to find
: dy
: --- in terms of variable y only
: dx
: 不會算 請高手幫忙 謝謝
y = [tan(x+y)]^2
等號兩邊對 x 微分
dy dy
---- = (((sec(x+y))^2)(1 + ----)
dx dx
dy
(1 - (sec(x+y))^2)(----) = ((sec(x+y))^2
dx
dy ((sec(x+y))^2
---- = -------------------
dx 1 - (sec(x+y))^2
--
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