Derivative of 2^-x with respect to x, is ______?
- -2⁻ˣ·log2
- 2⁻ˣ·log2
- 2⁻ˣ·log4
- None of these
Explanation
The derivative of 2^(-x) is -2^(-x) * ln(2), which can be written as -2⁻ˣ·log2 (considering log as ln or log base e implicitly in the derivative formula).
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