Find the turning point(s) of the following function f(x) = x^2-2x+4. Determine whether the turning point is a minimum or maximum.

Differentiate f(x) with respect to x.You get f'(x) = 2x - 2Turning points occur when the derivative of f(x) = 0. In other words, when f'(x) = 0. This occurs when x=1.Now to determine if maximum or minimum, find f''(x) by differentiating f'(x) wrt x. f''(x) = 2. Since 2 is greater than 0, we know from theory that this point must be a minimum.

Related Maths A Level answers

All answers ▸

At x=3, is the polynomial y= (4/3)x^3 -6x^2 + 11 at a maxima or minima?


Where does the quadratic formulae come from?


What is a logarithm?


Express 6sin(2x)+5cos(x) in the form Rsin(x+a) (0degrees<x<90degrees)


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences