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Mathematics 18 Online
OpenStudy (anonymous):

0.5e ^-0.08x

OpenStudy (kc_kennylau):

how may i help you

OpenStudy (anonymous):

0.5e ^-0.08x, how do I get a primitive function out of it? Thank you inadvance.

OpenStudy (phi):

do you know how to integrate it ?

OpenStudy (kc_kennylau):

\[\int e^{ax}dx\]\[=\frac1ae^{ax}+C\]

OpenStudy (kc_kennylau):

Can you plug \(a=-0.08\) into that? :)

OpenStudy (anonymous):

I feel so hopeless in these new formulas...Okey, then according to Kennylau, this will give me 1/0.08 * 0.5e^0.08x + C

OpenStudy (kc_kennylau):

um yes

OpenStudy (anonymous):

But where should I mulpiply things? The answer should be -6.25e^0.08x

OpenStudy (kc_kennylau):

Well let's write it out first and you'll get it:\[-\frac1{0.08}\times0.5\times e^{-0.08x}+c\]

OpenStudy (anonymous):

oooh! I just multiply the numbersl leaving the e^n , plus the constant sign Thank you!

OpenStudy (kc_kennylau):

no problem :)

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