The function f(x)=x^2 -2x -24x^(1/2) has one stationary point. Find the value of x when f(x) is stationary, and hence determine the nature of this stationary point.

dy/dx = 2x - 2 -12x-1/2dy/dx = 02x - 2 - 12x-1/2 = 0x = 4 (stationary point)d2y/dx2= 2 + 6x-3/2when x=4, d2y/dx2= 11/411/4 > 0 therefore the point is a minimum

Related Maths A Level answers

All answers ▸

Make a the subject of 3(a+4) = ac+5f


A line has an equation y = e^(2x) - 10e^(x) +12x, find dy/dx


How do we use the Chain-rule when differentiating?


How would you differentiate 3x^4 - 2x^2 + 9x - 1