Trigonometry Examples

$- 3 \arctan (2 x) = x (x)$

Step 1

Multiply $x$ by $x$ .

$- 3 \arctan (2 x) = x^{2}$

Step 2

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x = - 1 - \frac{4 \sqrt{5}}{9}, 0$

Step 3

The result can be shown in multiple forms.

Exact Form:

$x = - 1 - \frac{4 \sqrt{5}}{9}, 0$

Decimal Form:

$x = - 1.99380799 \dots, 0$

Step 4