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)

Answered by Alexandra M. Maths tutor

3022 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Find the equation of the normal line at the point H, where θ= π/6, on the curve with equations x=3sinθ and y=5cosθ


I don't fully understand the purpose of integration. Could you please explain it to me?


Given a curve has the equation f'(x) = 18x^2-24x-6 and passes through the point (3,40), use integration to find f(x) giving each answer in its simplest form.


How do I evaluate composite functions?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences