Thread: [SOLVED] local max and min

1. [SOLVED] local max and min

f(x)=(x^2 - 3 ) e^x

I get local max at x = -3 and x = 1

I cannot however, plot this point. How can I find y?

2. Originally Posted by thekrown
f(x)=(x^2 - 3 ) e^x

I get local max at x = -3 and x = 1

I cannot however, plot this point. How can I find y?
Plug in your x values and solve.

3. I get math syntax error when I try to plug -3 into the original equation.

4. $f(-3)=[(-3)^2-3]e^{-3}=(9-3)e^{-3}=\frac{3}{e^3}$

5. Well I get 9-3 not 9-6. Can you double check your answer?

I see what I did wrong, I guess you can't input e^-3 in a calculator. Now I just tried 1/e^3 and still got syntax error.

Is it possible this is not computable?

6. $\frac{1}{e^3}=.049787068368...$

7. Got it. Thanks.