We can calculate the gradient of a tangent to a curve by differentiating. In order to find the equation of a tangent, we: Differentiate the equation of the curve Substitute the \(x\) value into the ...
To do this, we need to revise the discriminant and intersections. Firstly, we need to prove whether or not the curve and straight line actually intersect at all by using the discriminant. Remember to ...
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