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# The Rules of Differentiation

### Constant Rule

If and a is a real number, then
.

### Constant Multiple Rule

If and a is a real number, then
.

### Power Rule

If and n is a real number, then
.

### Product Rule

If f and g are differentiable at x, then

### Quotient Rule

If f is the quotient g(x)/h(x) and h(x) ≠ 0, then

### Chain Rule

If g is differentiable at x and f is differentiable at g(x), then