find the coordinate of the maximum value of the function f(x) = 9 – (x – 2)^2

Firstly you would start by differentiating the function and equating it to zero as the gradient of the function at the maximum point is zero. to differentiate this function you would use the chain rule since it is in the form f(x)=h(g(x)). -2(x-2) = 0 then you can see that the only solutions to this equation is when x = 2 so you plug that back into the equation to get : y = 9 - (2-2)^2 = 9 so coordinate is (2,9).

SB

Related Maths A Level answers

All answers ▸

Find the range of values of k for which x²+kx-3k<5 for some x, i.e. the curve y=x²+kx-3k goes below y=5


The line L has equation y=5-2x. Find an equation of the line perpendicular to L, which passes through the point P (3,-1).


Differentiate y=x^3*(x^2+1)


Why does a 'many to one' function not have an inverse?