What is the limit as x approaches 0 of (4tan(x))/x ?

The limit as x approaches 0 of (4tan(x))/x is 4

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limit as x approaches 0 of (4tan(x))/x

x \to 0 lim (\frac{4 tan ( x )}{x})

4

Solution steps

x \to 0 lim (\frac{4 tan ( x )}{x})

x \to a lim [c \cdot f (x)] = c \cdot x \to a lim f (x)

= 4 \cdot x \to 0 lim (\frac{tan ( x )}{x})

Apply L'Hopital's Rule

= 4 \cdot x \to 0 lim (\frac{sec ^{2} ( x )}{1})

Plug in the value

x = 0

= 4 \cdot \frac{sec ^{2} ( 0 )}{1}

Simplify

4 \cdot \frac{sec ^{2} ( 0 )}{1} : 4

= 4

What is the limit as x approaches 0 of (4tan(x))/x ?
The limit as x approaches 0 of (4tan(x))/x is 4