Posted by Tima on Tuesday, April 9, 2013 at 5:12pm.
Find the equation of the line tangent to
f(x) = xe^x
at the point where x = 0. What does this tell you about the behavior of the graph when x = 0?

Calculus  Reiny, Tuesday, April 9, 2013 at 6:47pm
first of all , when x = 0 , f(0) = 0
so the point is (0,0)
f'(x) = x(e^x) + e^x
when x = 0
f'(0) = 0 + 1 = 1
equation of tangent : y = x
at (0,0) the function is increasing
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