Find the stationary points of y= 5x^2 + 2x + 7

Stationary points occur when the gradient is 0 so when dy/dx =0 therefore we need to find dy/dx.By using 'down and decrease', we bring down the power and multiply by the coefficient and then decrease the power by 1So, dy/dy = (5*2)x^1 + (2)x^0 which simplifies to dy/dx = 10x + 2Setting dy/dx = 0 gives us 10x + 2 = 0. We can rearrange this to get x = -1/5 and sub this back into the original equation to find the y coordinate stationary point= (-1/5, 34/5)

AM
Answered by Alexandra M. Maths tutor

3682 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Find the integral of 4sqrt(x) - 6/x^3.


give the coordinates of the stationary points of the curve y = x^4 - 4x^3 + 27 and state with reason if they are minumum, maximum, or points of inflection.


y = 4(x^3) + 7x ... Find dy/dx


The curve C has the equation y = 2e^x -6lnx and passes through the point P with x - coordinate 1. a) Find the equation to the tangent to C at P


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning