INTEGRATE 9^x...?
回答 (2)
2016-07-28 8:41 pm
∫ 9^x dx = 1/ln(9) 9^x + C
Note that 9^x = e^(x ln(9)).
Note that 9^x = e^(x ln(9)).
2016-07-28 8:40 pm
∫ 9^x dx
Let y = 9^x
log y = x log 9
(1/y) dy/dx = log 9
dy/dx = y log 9
∫ dy/y = log 9 ∫ dx
log y = x log 9 + C
Let y = 9^x
log y = x log 9
(1/y) dy/dx = log 9
dy/dx = y log 9
∫ dy/y = log 9 ∫ dx
log y = x log 9 + C
收錄日期: 2021-04-21 19:27:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160728123234AAyvmPR