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(1) Find the gradient using differentiation (2) If the gradient at (x1,y1) is m,y - y1 = m(x - x1)(1) We differentiate the given equation:dy/dx = 2x + 3 <...
The total number of 'parts' in this ratio is 5+3+2 = 10. So, to work out how much of the total corresponds to 1 part, we need to divide the t...
I have choose a quadratic equation as a common question . This is for both GCSE & A-level student. (2x)^2-x-1=0To solve this equation we have four methods:- Factoring Completing square Quadrat...
The best way to tackle this sort of worded problem is to create a solvable equation. Lets call the bill before the voucher was used, X. So, the price after the voucher was applied is: = X...
To answer this we will use implicit differentiation with respect to x. So start by differentiating each term. On the left hand side 0 differentiates to 0. On the right hand side 5x2 differentia...
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