Find dy/dx of 5x^2 + 2y^3 +8 =17.

As we have to differentiate both x and y, we must use implict differentiation for the y by differentiating it with respect to x (also written as d/dx)

5x-> 10x (multiply the power by the number at the start and take away 1 from the power)

2y3 -> 6y2 . dy/dx (the dot means multiply)

8 -> 0 (a sole constant always differnetiates to 0)

17 -> 0

Therefore the equation now looks like this:

10x + 6y2 . dy/dx = 0

so 6y2 .dy/dx = -10x

so dy/dx = -10x / 6y

AP

Related Maths A Level answers

All answers ▸

Integrate 3 sin(x) + cos(2x)


How do you find the gradient of a line?


express x^2-4x+9 in the form (x-q)^2+y


Integrate Sin^2(x)