A curve has equation y=2x^3. Find dy/dx.

We differentiate here to find the gradient, dy/dx, i.e. the differenitial of y in terms of x. As the right handside is purely dependant on x, this is simple. We can just multiply through by the power, i.e. 2x3=6, then negate the power by one, 3-1=2. Therefore giving us dy/dx = 6x^2.

CT

Related Maths A Level answers

All answers ▸

The triangle ABC is such that AC=8cm, CB=12cm, angle ACB=x radians. The area of triangle ABC = 20cm^2. Show that x=0.430 (3sf)


if a^x= b^y = (ab)^(xy) prove that x+y =1


The point P (4, –1) lies on the curve C with equation y = f( x ), x > 0, and f '(x) =x/2 - 6/√x + 3. Find the equation of the tangent to C at the point P , giving your answer in the form y = mx + c. Find f(x)


Integrate the function f(x) = ax^2 + bx + c over the interval [0,1], where a, b and c are constants.