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Mathematics 20 Online
OpenStudy (anonymous):

Find the limit of the function by using direct substitution. lim(x -> pi/2) (2e^x cos x)

OpenStudy (isaiah.feynman):

Plug in pi/2 for x, and evaluate.

OpenStudy (anonymous):

(2e^pi/2 cos pi/2)

geerky42 (geerky42):

Yes. Now solve it.

OpenStudy (anonymous):

I need help with that

geerky42 (geerky42):

What is cos pi/2?

OpenStudy (isaiah.feynman):

Pi/2 is 90 degrees, cos pi/2 = 0 @lornbeach

geerky42 (geerky42):

Too much hint.

OpenStudy (isaiah.feynman):

Next time sir. @geerky42

geerky42 (geerky42):

Huh?

OpenStudy (isaiah.feynman):

Next time I will not give too much hints.

OpenStudy (anonymous):

so pi/2?

OpenStudy (isaiah.feynman):

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