Asked by Erica

Find the exponential function that passes through (0,5) and (4, 1/2). Formula is y=Ce^kx
Answered by bobpursley
5=Ce^0 >>> C=5
1/2=5e^4k
.1=e^4k
take ln of each side
ln(.1)=4k
k=ln(.1)/4== -0.576
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