MathPHP\Functions\PolynomialTest::testFundamentalTheoremOfCalculus PHP Метод

    public function testFundamentalTheoremOfCalculus()
    {
        // p(x)  = x² + 2x + 3
        $polynomial = new Polynomial([1, 2, 3]);
        $integral = $polynomial->integrate();
        $actual = $integral->differentiate();
        $expected = $polynomial;
        $this->assertEquals($expected, $actual);
    }