Find the turning point of the line y = x^2 + 2x -1

d(x2+2x-1)/dx = 2x+2when dy/dx = 0, x = -1when x = -1, y = -2
therefore the turning point is (-1,-2)

EO

Related Maths A Level answers

All answers ▸

Differentiate with respect to x: y=xln(x)


Find the tangent to the curve y=(3/4)x^2 -4x^(1/2) +7 at x=4, expressing it in the form ax+by+c=0.


How do I show that (cos^4x - sin^4x) / cos^2x = 1 - tan^2x


How do I differentiate y = ln(sin(3x))?