Question

for what values of x is f(x)= -x^2 + 2x increasing??
a. x>0
b. x<1
c. x>2
d. x<2
e. 0 14 years ago

Answer 1

f'(x) = -2x+2
for increasing x this must be > 0

-2x+2 > 0
-2x > -2
x < 1

b.