What is the limit as x approaches infinity of x^3+4x ?

The limit as x approaches infinity of x^3+4x is infinity

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limit as x approaches infinity of x^3+4x

x \to \infty lim (x^{3} + 4 x)

\infty

Solution steps

x \to \infty lim (x^{3} + 4 x)

Apply Infinity Property:

x \to \infty lim (a x^{n} + \dots + b x + c) = \infty, a > 0,

n is odd

a = 1, n = 3

= \infty

\int 49 e^{- 7 x} sin (7 x) d x

\frac{\partial}{\partial x} (cos (6 y - 2 x))

\frac{\partial}{\partial x} (y^{6} cos (6 x) \cdot 6)

y = \frac{1}{( 7 x + 16 ) ^{4}}

7 sec (x)

What is the limit as x approaches infinity of x^3+4x ?
The limit as x approaches infinity of x^3+4x is infinity