\frac{d}{dx}\left(\frac{f(x)}{g(x)}\right) = \frac{f'(x)g(x) - f(x)g'(x)}{[g(x)]^2} \quad \text{(g(x) ≠ 0)}
y=3x+1
2.49779248265791420
1.09131128190107020
1.36671371455898421
2.5278683675684418
5720132284446159481538
1514031
54674141822471...
5x^4-4x^3+3x^2+20x-4=0
5x-1 = 6x-14
(b) Show that AAt and At A are symmetric for any matrix of order 2 x 3.
2 cos^2 2A - 1
\sqrt{\frac{12}{x}-x}+\sqrt{12-x}=\frac{12}{x}
\sqrt{\frac{12}{x}-x}+\sqrt{12-x}-\frac{12}{x}
