Solve y=1div2*9.81*x^2

$$y=1 \div 2 \times 9.81 \times { x }^{ 2 }$$

Solve for y

$$y=\frac{981x^{2}}{200}$$

Solution Steps

Multiply \frac{1}{2} and 9.81 to get \frac{981}{200}.

$$y=\frac{981}{200}x^{2}$$

Solve for x (complex solution)

$$x=-\frac{10\sqrt{218y}}{327}$$

$$x=\frac{10\sqrt{218y}}{327}$$

Solve for x

$$x=\frac{10\sqrt{218y}}{327}$$

$$x=-\frac{10\sqrt{218y}}{327}\text{, }y\geq 0$$