# calculus

posted by
**annie** on
.

Please help!

∫17dx/x^2(sqrt(x^2+49)) .. let x=7tan(θ).

thank you so much for your help!

posted by
**annie** on
.

Please help!

∫17dx/x^2(sqrt(x^2+49)) .. let x=7tan(θ).

thank you so much for your help!