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• Derivative Step by Step
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• Identical expressions

• (x - two)*exp(-x) = zero
• (x minus 2) multiply by exponent of ( minus x) equally 0
• (x minus two) multiply by exponent of ( minus x) equally zero
• (x - 2)exp(-x) = 0
• x - 2exp-x = 0

• Similar expressions

• (x - 2)*exp(x) = 0
• (x + 2)*exp(-x) = 0