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y is proportional to x 2 so this means y = A*x 2 for some constant A. When y = 75, x = 5. Put these values in the formula above to find A: 75 = A*25 75/25 = A A = 3 So y = 3x 2

To differentiate x 2 you bring the power of x down, then reduce the power of x by 1, so d/dx(x 2 ) = 2x 1 ln3x differentiates to (d/dx(3x))/3x = 3/3x = 1/x e^x differentiates to (d/dx(x)) e^x = 1 e^x Therefo...

If we give a peice of gold negative charge and shine long wave, low frequency, electro-magnetic (E-M) radiation on it (for example radio waves) absolutely nothing will happen. If you start to shorten the wav...

For the exams, the definition you will need to know is that "diffusion is the net movement of a substance from an area of high concentration to an area of low concentration, down a diffusion gradient&qu...

I believe that the best way to begin a personal statement is to immediately begin with an interesting point about yourself that relates to the degree you're applying for. Beginning with "I want to study...