mathjax doc change test

js/Vector2.ts

@@ -105,7 +105,9 @@ export default class Vector2 implements TPoolable {
 
   /**
    * The angle $\theta$ of this vector, such that this vector is equal to
-   * $$ u = \begin{bmatrix} r\cos\theta \\ r\sin\theta \end{bmatrix} $$
+   * $$
+   * u = \begin{bmatrix} r\cos\theta \\ r\sin\theta \end{bmatrix}
+   * $$
    * for the magnitude $r \ge 0$ of the vector, with $\theta\in(-\pi,\pi]$
    */
   public getAngle(): number {
@@ -181,7 +183,9 @@ export default class Vector2 implements TPoolable {
 
   /**
    * The scalar value of the z-component of the equivalent 3-dimensional cross product:
-   * $$ f( u, v ) = \left( \begin{bmatrix} u_x \\ u_y \\ 0 \end{bmatrix} \times \begin{bmatrix} v_x \\ v_y \\ 0 \end{bmatrix} \right)_z = u_x v_y - u_y v_x $$
+   * $$
+   * f( u, v ) = \left( \begin{bmatrix} u_x \\ u_y \\ 0 \end{bmatrix} \times \begin{bmatrix} v_x \\ v_y \\ 0 \end{bmatrix} \right)_z = u_x v_y - u_y v_x
+   * $$
    */
   public crossScalar( v: Vector2 ): number {
     return this.x * v.y - this.y * v.x;
@@ -687,7 +691,9 @@ export default class Vector2 implements TPoolable {
 
   /**
    * Returns a Vector2 with the specified magnitude $r$ and angle $\theta$ (in radians), with the formula:
-   * $$ f( r, \theta ) = \begin{bmatrix} r\cos\theta \\ r\sin\theta \end{bmatrix} $$
+   * $$
+   * f( r, \theta ) = \begin{bmatrix} r\cos\theta \\ r\sin\theta \end{bmatrix}
+   * $$
    */
   public static createPolar( magnitude: number, angle: number ): Vector2 {
     return new Vector2( 0, 0 ).setPolar( magnitude, angle );