# Maths

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if f(x) = 2x - x ln x

show that f(e^3) = -e^3
I know you have to substitute e^3 into the function, so Ive sone ths so far:

2e^3 - e^3 ln e^3
What is the next step?

• Maths -

2e^3-e^3lne^3=
2e^3-e^3*3=-e^3

34= ln (e^34)

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