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Take the number that is in the root sign, and change it to 2 numbers multiplied together (we want one of these numbers to be a square number). A square number is 1, 4, 9, 16 etc. Then separate this into two ...

A quadratic equations is a second-order equation with at most two solutions.The standard form of a quadratic equation looks like: ax 2 + bx + c = 0 . For instance if we have the equation x 2 - 2x - 35 = 0(wh...

First, differentiate and put the derivative equal to zero. dy/dx=6 x^2-30 x+24=0. Solve this equation to get that x=4 and x=1. Substitute these values into the original equation to get the corresponding valu...

From the definition of a derivative: f'(x) = lim h->0 ((f(x+h) - f(x)) / h) Let f(x) = x^n --> d\dx x^n = lim h->0 (((x+h)^n - x^n) / h) By binomial expansion, (x+h)^n = x^n + nhx^(n-1) + n(n-1)h^2 ...

Using the definitions of coshx and sinhx (coshx=1/2(e^x+e^-x) and sinhx=1/2(e^x-e^-x)), we can substitute these into what we want to show, giving 12(1/2(e^x+e^-x)) - 4(1/2(e^x-e^x)), expanding this out gives...