Given that y = ((4x+3)^5)(sin2x), find dy/dx

First of all, we have to use the product rule, since two things are multiplied together.  The product rule states that d/dx (u*v) = vu' + uv'

Let u = (4x+3)5  v = sin(2x)

Now, to find  u' and v' we have to find du/dx and dv/dx. As we see, we need to use the chain rule to find du/dx

u' = 20(4x+3)4   v' = 2cos(2x)

Finally, dy/dx = vu' + uv' = 20sin(2x)(4x+3)4 + 2cos(2x)(4x+3)5

JN

Related Maths A Level answers

All answers ▸

The points A and B have coordinates (3, 4) and (7, 6) respectively. The straight line l passes through A and is perpendicular to AB. Find an equation for l, giving your answer in the form ax + by + c = 0, where a, b and c are integers.


Find the exact solution of the equation in its simplest form: 3^x * e^4x = e^7.


integrate 5x + 3(square root of x)


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