Chapter 5 - Trigonometric Functions - Section 5.5 Graphs of the Tangent, Cotangent, Cosecant, and Secant Functions - 5.5 Assess Your Understanding - Page 442: 45

$(f\circ g)(x)=tan(4x)$ and $(g\circ f)(x)=4tan(x)$. See graph.

1. Given $f(x)=tan(x)$ and $g(x)=4x$, we have $(f\circ g)(x)=tan(4x)$ and $(g\circ f)(x)=4tan(x)$. 2. See graph for $(f\circ g)(x$ (red) and $(g\circ f)(x)$ (blue).