\int_{-2}^{+2}e^{|x|}\,dx= A.   0
B.   e² − 2
C.   2e² − 1
D.   2e² − 2
E.   \(\large \boldsymbol{\frac{1\,-\,e^4}{e^2}}\)
    A    B    C    D    E

[ 6-A260 - op net sinds 23.7.2026-(E)- ]

Translation in   E N G L I S H

\int_{-2}^{+2}e^{|x|}\,dx=

Oplossing - Solution

1ste manier :
De functie \(f(x)=e^{|x|}\) is even zodat
\int_{-2}^{+2}e^{|x|}\,dx=2\int_{0}^{+2}e^x\,dx=2\left[e^x \right]_0^2=2(e^2-e^0)=2e^2-2
2de manier :
\inline\\\int_{-2}^{+2}e^{|x|}\,dx=\int_{-2}^{0}e^{-x}\,dx+\int_{0}^{2}e^{|x|}\,dx\\=-\int_{-2}^{0}e^{-x}\,d(-x)+\int_{0}^{2}e^x\,dx\\=-\left[e^{-x}\right]_{-2}^0+\left[e^x \right]_0^2=-(e^0-e^2)+e^2-e^0\\=-1+e^2+e^2-1=2e^2-2
GWB