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Write in differentiable form: 1/4 t^-1Differentiate: - 1/4 t ^-2Evaluate derivative at t =8: 1/256

gradient is calculated using the change in y coordinates divided by change in x coordinates. so, (15-9)/(d-5)=3 => 6/(d-5)= 3rearrange this equation to get d on one side (6/3)+5 = d therefore d= 7

So this is a functions question which is essentially asking you to combine the first two functions and then equate them with the last one.
fg(x) can be considered as replacing the x in f(x) with g(x)...

From looking at this equality, we can see that this is a quadratic equation,This is because X² is the highest order term we have in this equation:In order to find the roots of our equality, we ...

First, show how to multiply out two brackets, and the structure of such a question.When given a quadratic, such as x^2 + 4x - 32 (x+8)(x-4)to solve this, first making a list of factor...