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To solve this problem, we want to make either the x or the y values either equation the same.To work out whether to change the x or the y values, work out the lowest common multiple for each.For x, the va...
Differentiate wrt x to get 3x2 + 3y2dy/dx = 3y + 3x dy/dx Rearrange to get dy/dx = (3x2 - 3y)/(3x-3y2). Set dy/dx =0 and infer y=x2. Substitute in fo...
2 = 2xTherefore x = 1
This is a question I recently tackled with one of my tutees from the edexcel GCSE specimen papers. I would begin to tackle any geometry question like this by drawing the triangle in question. We are given...
The Gradient is 4, this is because this is a straight line graph and it is in the form of y=mx+c, with m being the gradient and c being the y intercept. If the equation was y=6x+3, the gradient would be 6...
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