evaluate the integral (5)/(sqrt(10x+2))dx

A. sqrt(x^2+x)+C
B. .5(sqrt(x^2+x)+C
C. 1/(sqrtx^2+x)+C
D. sqrt(2x+1)+C
E. none

Question

evaluate the integral (5)/(sqrt(10x+2))dx

A. sqrt(x^2+x)+C
B. .5(sqrt(x^2+x)+C
C. 1/(sqrtx^2+x)+C
D. sqrt(2x+1)+C
E. none

turingtest · Answer

u-substitution integral$$u=10x+2\implies du=10dx$$

anonymous · Answer

so it's E??

turingtest · Answer

I don't think so
what is your integral after making the u-substitution?

anonymous · Answer

put sqt<10x+2>as u......u will get it........

turingtest · Answer

actually I don't think I see the right answer on there...
are you sure there are no typos here?

.sam. · Answer

i think its none

turingtest · Answer

Oh I'm sorry I read D for E
@quyenthuy820 was correct :p

anonymous · Answer

thank you guys!

.sam. · Answer

yeah it should be $$\sqrt{10 x+2}$$

lgbasallote · Answer

lol turing :p

anonymous · Answer

yes none of these answer is in [log{sqt<10x+2>}]/2

turingtest · Answer

well a little dyslexia makes math more fun anyway ;)

anonymous · Answer

evaluate (cos3x)/(sin3x)dx ??

i got: 1/3log(sin(3x))

is that correct?

turingtest · Answer

yes :)

turingtest · Answer

+C

anonymous · Answer

evaluate (e^x)/(2-e^x)dx

i got -log(2-e^x)+C ??

turingtest · Answer

yes it's also right, but...
could you please post each Q separately from now on? them's the rules.
thanks