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 3 years ago
please help me solve these using u substitution ( please show the workings) 1. e^x(root(1+e^x))
2.xtan(x^2)
3 sin(rootx)/rootx
 3 years ago
please help me solve these using u substitution ( please show the workings) 1. e^x(root(1+e^x)) 2.xtan(x^2) 3 sin(rootx)/rootx

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TBates
 3 years ago
Best ResponseYou've already chosen the best response.2Are you looking to take a derivative?

Andras
 3 years ago
Best ResponseYou've already chosen the best response.0My guess would be the integral

eistein+newton+gallileo=_me
 3 years ago
Best ResponseYou've already chosen the best response.0please integrate them through u subs

Andras
 3 years ago
Best ResponseYou've already chosen the best response.0OK, which one are u doing tbates?

lalaly
 3 years ago
Best ResponseYou've already chosen the best response.11. u = 1+e^x du = e^x dx so \[\int\limits{\sqrt{u}du}\]

lalaly
 3 years ago
Best ResponseYou've already chosen the best response.12. u= x^2 du= 2xdx \[\frac{1}{2} \int\limits{tanu du}\]

TBates
 3 years ago
Best ResponseYou've already chosen the best response.2On the second one set u=x^2 du = 2x dx du/2=2xdx Sub in: tan(u)/2 du The integral of tan(u)/2 (1/2)lncos u + C Plug back in for x (1/2)lncos x^2 + C

eistein+newton+gallileo=_me
 3 years ago
Best ResponseYou've already chosen the best response.0thanx guys and number 3?

lalaly
 3 years ago
Best ResponseYou've already chosen the best response.1u= sqrtx du = 1/(2sqrtx) \[2 \int\limits{sinu du}\]
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