Find the following integrals
∫ 4^x dx
Please show all the steps
回答 (2)
∫ 4^x dx
Let y = x⁴
lny = xln4
d(lny)/dy = (ln4)(dx/dy)
(1/y) = (ln4)(dx/dy)
dx = dy/(y)(ln4)
∫ 4^x dx = ∫ [(y)/(y)(ln4)]dy
= ∫ [1/(ln4)]dy
= (y/ln4) + C
= (4^x)/ln4 + C
2013-10-09 13:46:32 補充:
Sorry, 一時手快,打錯了,應該是 Let y = 4^x。
樓下易睇好多,睇樓下啦!
2013-10-09 14:17:20 補充:
YOU ARE WELCOME。你 D 答案好睇好多。
收錄日期: 2021-04-27 20:34:20
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