Difficult Maths

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Explain why this is true

How to remember, with roots of polynomials, what each coefficient corresponds to?

Commutative vs Associative

How to tell what way around to multiply the inverse matrix?

Find the inverse of this 3×3 matrix

What is wrong with the approach, assign the max of the absolute to be 2 and the min to be -2 then solve the equation?

Formulae needed when summing different types of series for ESAT?

Integrating trig functions

Integrating exponentials

Integrating powers

Differentiate tan(x)

Find the 2nd derivate of x=cos(2t) and y=sin(t)

Differentiate 5^x and 3^{4x}

Differentiate 7^{3x^2 + 3x}