Question

What is the integral of x^(-5/4) dx from 1 to infinity

Answer 1

I integrated it and gor 4x^(-1/4) but im not sure what to do after that

Answer 2

check your signs... isn't it -4x^(1/4) ?

Answer 3

oh yes it is -4/ (x^1/4) so that does become -4x^-1/4

Answer 4

but its from 1 to infinity so how do i compute that

Answer 5

getting -4x^-1/4 isnt teh end of the problem

Answer 6

no, you need to find F(infinity) - F(0)
so what is the limit as x goes to infinity of that thing?

Answer 7

I got 0 - (-4*1) = 4

Answer 8

thats it... good work

Answer 9

THANKS...im trying to prep up for the AP Calc BC exam

Answer 10

so everything i dont understand im trying to just practice

Answer 11

you will do fine ...