MathPHP\LinearAlgebra\VectorOperationsTest::testSubtract PHP Method

    public function testSubtract(array $A, array $B, array $R)
    {
        $A = new Vector($A);
        $B = new Vector($B);
        $A−B = $A->subtract($B);
        $R = new Vector($R);
        $this->assertEquals($R, $A−B);
        $this->assertEquals($R->getVector(), $A−B->getVector());
    }