(i) Find the derivatives of the following functions and hence find the gradients of their curves...

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(i) Find the derivatives of the following functions and hence find the gradients of their curves at the given point (a) y=2x^(2)-3x+7 at x=-1 (b) y=x^(2)-(4)/(x) at x=2 (ii) Find the point (s) at which the gradient of the curve (a) y=x^(2)+3x-1 is equal to 3 (b) y=x^(3)+3x^(2)-9x is equal to 15 (i) Find the derivatives of the following functions and hence find the gradients of their curves at the given point (a) y=2x^(2)-3x+7 at x=-1 (b) y=x^(2)-(4)/(x) at x=2 (ii) Find the point (s) at which the gradient of the curve (a) y=x^(2)+3x-1 is equal to 3 (b) y=x^(3)+3x^(2)-9x is equal to 15

Answer rating: 100% (QA)

solution ia y 2x3x7 b dy 4x3 dyx x1 Gradient 7 y x 4x dy 2x421 14 2 d... View the full answer