Evaluate the Integral by Making the Given Substitution $\int \cos 5 x d x, u=5 x$

Q20: Evaluate the definite integral. <span

Q21: Evaluate the integral. <span class="ql-formula"

Q22: Approximate the area under the curve

Q23: Determine a region whose area is

Q24: Evaluate the integral if it exists.

Q26: If <span class="ql-formula" data-value="h^{\prime}"><span class="katex"><span

Q27: Use the given graph of

Q28: Evaluate the integral. <span class="ql-formula"

Q29: Evaluate the integral. <span class="ql-formula"

Q30: If <span class="ql-formula" data-value="\int_{0}^{6} f(x)