Integral of cos x/(1 + sin^2 x) ❖ Calculus 1 ❖ Trig Integrals

This video works through the integral of cos x/(1 + sin^2 x). This type of integral is typically found in a Calculus 1 class.

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[ariasg]

can you explain the vertical line test?

[chibuchiaddey]

Where did the C at the end come from please

[katiewilson]

What if the +1 is on the top and not the bottom?