Integration Problem 3

Integral taken from instagram user @integralsforyou

let u=x^{-1}

Integration problem 2

Integral taken from instagram user @integralsforyou

let u=\cos(x)

Integration problem 1

Integral taken from instagram user @integralsforyou

The Quadratic Formula

The quadratic formula is used to solve for the roots of a quadratic polynomial (the highest power is 2)

given ax^2+bx+c=0, where a\ne0

Proof using completing the square

multiplying both sides by 4a, we get