Question 608072
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi
f(x)=2-2x^2 
f'(x) = -4x 
f'(x)>0  Increasing (&#8722;&#8734;,0)
f'(x)<0  Decreasing  (0,&#8734;)
The relative maxima for f(x)= {{{highlight(2)}}}(when f'=0, x = 0) 
{{{drawing(300,300,   -6, 6, -6, 6, grid(1),
circle(0, 2,0.3),
graph( 300, 300, -6, 6, -6, 6,0,2-2x^2))}}}