Derivative Rules for Hyperbolic Functions
In this tutorial we shall discuss the basic formulas of differentiation for hyperbolic functions.
1. $$\frac{d}{{dx}}\sinh x = \cosh x$$
2. $$\frac{d}{{dx}}\cosh x = \sinh x$$
3. $$\frac{d}{{dx}}\tanh x = \sec {{\text{h}}^2}x$$
4. $$\frac{d}{{dx}}\coth x = – \csc {{\text{h}}^2}x$$
5. $$\frac{d}{{dx}}\sec {\text{h}}x = – \sec {\text{h}}x\tanh x$$
6. $$\frac{d}{{dx}}\csc {\text{h}}x = – \csc {\text{h}}x\coth x$$
Now for general formulas, when any function is given in terms angles, they are of the following form
1. $$\frac{d}{{dx}}\sinh f\left( x \right) = \cosh f\left( x \right)\frac{d}{{dx}}f\left( x \right)$$
2. $$\frac{d}{{dx}}\cosh f\left( x \right) = \sinh f\left( x \right)\frac{d}{{dx}}f\left( x \right)$$
3. $$\frac{d}{{dx}}\tanh f\left( x \right) = \sec {{\text{h}}^2}f\left( x \right)\frac{d}{{dx}}f\left( x \right)$$
4. $$\frac{d}{{dx}}\coth f\left( x \right) = – \csc {{\text{h}}^2}f\left( x \right)\frac{d}{{dx}}f\left( x \right)$$
5. $$\frac{d}{{dx}}\sec {\text{h}}f\left( x \right) = – \sec {\text{h}}f\left( x \right)\tanh f\left( x \right)\frac{d}{{dx}}f\left( x \right)$$
6. $$\frac{d}{{dx}}\csc {\text{h}}f\left( x \right) = – \csc {\text{h}}f\left( x \right)\coth f\left( x \right)\frac{d}{{dx}}f\left( x \right)$$