Calc 2:

Section 9.1: Problem 10 (1 point) The ellipse 22 = 1 32 can be drawn with parametric equations. Assume the curve is traced clockwise as the parameter increases. If I = 2 cos(t) then y =Section 9.3: Problem 18 (1 point) You are given the polar curve r = ef. (a) List all of the points (r, @) where the tangent line is horizontal. In entering your answer, list the points starting with the smallest value of r and limit yourself to 1 Section 9.2: Problem 4 (1 point) Results for this submission Entered Answer Preview Result 0 0 correct (25,0) (25, 0) correct -1.73205080756888, 1.73205080756888 -V3, v3 correct (-1.73205080756888,10.3923048454133), (1.73205080756868,-10.3923048454133) (-V3, 6V3), (V3, -6V/3) incorrect At least one of the answers above is NOT correct. Consider the parametric curve: I = 25-12 y = 1-9t At which & value(s) is the tangent to this curve vertical? ( Note: If there is more than one write them as a comma separated list) t = 0 Write the point(s) at which the tangent is vertical.( Note: If there is more than one write them as a comma separated list, e.g. (1,2),(3,4)) (25,0) At which & value(s) is the tangent to this curve horizontal? ( Note: If there is more than one write them as a comma separated list). t = -V3,V3 A Write the point(s) at which the tangent is horizontal.( Note: If there is more than one write them as a comma separated list, e.g. (1,2),(3,4)) (-V3,6/3),(V3,-6V/3)Section 9.4: Problem 12 (1 point) Find the area of the region that lies inside both curves r = 8sin(20), r = 8 sin(8) Area =Section 9.4: Problem 7 (1 point) Find the exact length of the polar curve described by: r = 2e- on the interval =