Asked by plsHelp
Find the intervals which proves that function is upward/increase.
a) f(x)=1-x2
b) f(x)=x2-2x
a) f(x)=1-x2
b) f(x)=x2-2x
Answers
Answered by
Steve
f(x) is increasing if f'(x) > 0
I'll do (a)
f'(x) = -2x
f'(x) > 0 when x < 0
The graph is a parabola with vertex at (0,1) which opens downward.
I'll do (a)
f'(x) = -2x
f'(x) > 0 when x < 0
The graph is a parabola with vertex at (0,1) which opens downward.
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