Calculus Examples

$lim_{x \to - \infty} \arctan (x^{2})$

Step 1

The limit at negative infinity of a polynomial of even degree whose leading coefficient is positive is infinity.

$\infty$

Step 2

Substitute $t$ for $x^{2}$ and let $t$ approach $\infty$ since $lim_{x \to - \infty} x^{2} = \infty$ .

$lim_{t \to \infty} \arctan (t)$

Step 3

The limit as $t$ approaches $\infty$ is $\frac{π}{2}$ .

$\frac{π}{2}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{π}{2}$

Decimal Form:

$1.57079632 \dots$