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Popular >

limit as x approaches-2 of 4x^2-1

Solution

x \to - 2 lim (4 x^{2} - 1)

Solution

15

Solution steps

x \to - 2 lim (4 x^{2} - 1)

Plug in the value

x = - 2

= 4 (- 2)^{2} - 1

Simplify

4 (- 2)^{2} - 1 : 15

= 15

Popular Examples

limit as x approaches 2 of 3+|2x-4|

x \to 2 lim (3 + ∣ 2 x - 4 ∣)

limit as x approaches-2-of (x+2)/(|x+2|)

x \to - 2 - lim (\frac{x + 2}{∣ x + 2 ∣})

limit as x approaches 0-of xe^{-1/x}

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

limit as x approaches 0 of (6^x-6^{-x})/x

x \to 0 lim (\frac{6 ^{x} - 6 ^{- x}}{x})

limit as x approaches 0 of x^2 1/(x^2)

x \to 0 lim (x^{2} \frac{1}{x ^{2}})

Frequently Asked Questions (FAQ)

What is the limit as x approaches-2 of 4x^2-1 ?
The limit as x approaches-2 of 4x^2-1 is 15