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Sever21 [200]
2 years ago
13

I have

= \frac{ t^{2} }{9} " alt="f(t)= \frac{ t^{2} }{9} " align="absmiddle" class="latex-formula"> and g(t)=  e^{ \frac{- ln(t)}{4} }
Given that k(t)=f(t)+cg(t) and k(1)=4, what is the value of c?
Mathematics
1 answer:
skad [1K]2 years ago
6 0
\bf \begin{cases}
f(t)=\cfrac{t^2}{9}\\\\
g(t)=e^{\cfrac{}{}\frac{-ln(t)}{4}}\\\\
k(t)=f(t)+c\cdot g(t)
\end{cases}\implies k(t)=\cfrac{t^2}{9}+C\cdot e^{\cfrac{}{}\frac{-ln(t)}{4}}
\\\\\\
k(1)=4\implies 
\begin{cases}
k=4\\
t=1
\end{cases}\implies 4=\cfrac{1^2}{9}+C\cdot e^{\cfrac{}{}\frac{-ln(1)}{4}}
\\\\\\
4=\cfrac{1}{9}+C\cdot e^{\frac{0}{4}}\implies 4=\cfrac{1}{9}+C\cdot 1\implies 4-\cfrac{1}{9}=C
\\\\\\
\cfrac{35}{9}=C
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