What is the limit as x approaches 0 of (10^x-4^x)/x ?

The limit as x approaches 0 of (10^x-4^x)/x is ln(10)-2ln(2)

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limit as x approaches 0 of (10^x-4^x)/x

x \to 0 lim (\frac{1 0 ^{x} - 4 ^{x}}{x})

ln (10) - 2 ln (2)

Decimal

0.91629 \dots

Solution steps

x \to 0 lim (\frac{1 0 ^{x} - 4 ^{x}}{x})

Apply L'Hopital's Rule

= x \to 0 lim (\frac{1 0 ^{x} ln ( 10 ) - ln ( 2 ) \cdot 2 ^{2 x + 1}}{1})

Plug in the value

x = 0

= \frac{1 0 ^{0} ln ( 10 ) - ln ( 2 ) \cdot 2 ^{2 \cdot 0 + 1}}{1}

Simplify

\frac{1 0 ^{0} ln ( 10 ) - ln ( 2 ) \cdot 2 ^{2 \cdot 0 + 1}}{1} : ln (10) - 2 ln (2)

= ln (10) - 2 ln (2)

What is the limit as x approaches 0 of (10^x-4^x)/x ?
The limit as x approaches 0 of (10^x-4^x)/x is ln(10)-2ln(2)