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This question is asking us to find the first order derivative of f(x) with respect to x, then the second order derivative when x=1/2i) Firstly, let's consider (d/dx)4/x:There are two ways to think about d...
With the methods we know at A Level we cannot current differentiate xx in its current form. Therefore let y = xxTo turn it into a form we can differentiate we take the natural log o...
If you change the coefficient of x, it will stretch or squash the graph in the x direction by the reciprocal of the factor that the coefficient is changed by. If you change the coefficient of f(x), then t...
The equation of the line is y=x3+7x2+1To find the equation for the gradient of the line, we need to differentiateDifferentiating gives us dy/dx = 3x2+14xWe can now find th...
use the product rule as well as chain rule. We require the product rule when there is are variables both outside and inside the brackets. The chain rule is only utilised when we have one variable.
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