- #1
JFonseka
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Homework Statement
The total charge that has entered a circuit element is q(t)=2(3 − e[tex]^{-4t}[/tex]) when t≥0 and
q(t)=0 when t<0. Determine the current in this circuit element for t≥0.
Homework Equations
Differentiation
The Attempt at a Solution
i(t) = 2(4e[tex]^{-4t}[/tex]) + 3 - e[tex]^{-4t}[/tex]
i(t) = 7e[tex]^{-4t}[/tex] + 3
However the answer says 8e[tex]^{-4t}[/tex]
What have I done wrong?