Recent content by Voodoo583

1. Why does Lim as x approaches infinity of x/(x-9) = 1?

Using L'Hopitals rule for evaluating indeterminate forms, just differentiate both the numerator and the denominator separately to produce 1/1. Xyius explains well intuitively why the result is what it is.
2. Computing Arc Length and Cannot Solve the Integral

Homework Statement Find the length of the polar curve. Complete the cardioid r=1+cosθ Homework Equations L=∫αβ√[f(θ)2+f'(θ)2] dθ The Attempt at a Solution Given f(θ)2 is equal to cos2θ+2cosθ+1 and f'(θ)2=sin2θ I arrive at the integral ∫αβ√[2cosθ+2] dθ which I cannot for the life of me...