# Math Help - integrals

1. ## integrals

hey i am confused on how my teacher did this problem:

S[10-((5x+3)/(x^2))]

i think it is an indefinite integral

10x-5lnx+(3/x)+C

thanks

2. Originally Posted by talhaguy
hey i am confused on how my teacher did this problem:

S[10-((5x+3)/(x^2))]

i think it is an indefinite integral

10x-5lnx+(3/x)+C

thanks
Just write the fraction,

(5x+3)/(x^2) = 5x/x^2 + 3/x^2 = 5/x + 3/x^2 = 5x^{-1}+3x^{-2}

3. hey thanks a lot. i cant believe i can't see these things....