Find the stationary points of the equation. f(x)=3x^2+4x.

Stationary points are points on the graph where the gradient is equal to 0.The gradient for any given point can be calculated by differentiating the original equation.f(x)=3x^2+4xDifferentiating gives:=> f’(x)=6x+4Stationary points are where f’(x)=0=>6x+4=0=> 6x=-4=>x=-2/3To find y value input the x value into the original equation.f(-2/3)=3(-2/3)^2+4(-2/3)=> 4/3-8/3=> -4/3Answer: stationary point is at (-2/3,-4/3)

EW

Related Maths A Level answers

All answers ▸

What is the definite integral of 2x^2 + 4x + 1 with a lower limit of 3 and a higher limit of 6?


What is the equation of the curve that has gradient dy/dx=(4x-5) and passes through the point (3,7)?


Find the coordinates of the point of intersection between the line L:(-i+j-5k)+v(i+j+2k) and the plane π: r.(i+2j+3k)=4.


Let p(x) =30x^3 - 7x^2 -7x + 2. Prove that (2x+1) is a factor of p(x).