Problem7. . Express the definite integral as an infinite series first. Then approximate its value to within an error of at most 10 -4 using the least number of terms in the partial sum: S cos(x ) dx. 0 Page Break Problem8. Write parametric equations for the line passing through (3, 5), (4, 11). Page Break Problem9. Set up an integral that computes the length of the path parametrizationer the given interval. c(t) = (sin 3t, cos 3t), 0