Simplify 1a+h−1ah\frac{\frac{1}{a+h} - \frac{1}{a}}{h}ha+h1−a1.
1a2\frac{1}{a^2}a21
−1a2-\frac{1}{a^2}−a21
1a(a+h)\frac{1}{a(a+h)}a(a+h)1
−1a(a+h)-\frac{1}{a(a+h)}−a(a+h)1