Question 820613: I need help to understand what to do when I see the "e" in an equation. Help is appreciated.
w(t)=60-30e^-.5t
Where t is the time in months, find each of the following:
w(0), w(1), w(4), and w(6)
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! I need help to understand what to do when I see the "e" in an equation. Help is appreciated.
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e is the base of natural logarithms.
It's probably on your calculator, might be Shift ln.
It's a number =~ 2.718281828459045... goes on like pi.
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w(t)=60-30e^-.5t
Where t is the time in months, find each of the following:
w(0), w(1), w(4), and w(6)
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w(t)=60-30e^-.5t
For w(0), sub 0 for t
w(0)=60-30e^0
= 60 - 30*1
= 30
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w(4)=60-30e^(-.5*4)
= 
=~ 60 - 0.135335
=~ 59.86466
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