Use the trapezoidal rule with n = 5 to approximate 15sin(x)xdx\displaystyle {\int_{{1}}^{{5}}}\frac{{\sin{{\left({x}\right)}}}}{{x}}{\left.{d}{x}\right.}.

15sin(x)xdx\displaystyle {\int_{{1}}^{{5}}}\frac{{\sin{{\left({x}\right)}}}}{{x}}{\left.{d}{x}\right.}\approx  
Keep at least 2 decimal places accuracy in your final answer