Instructions: do not open the exam booklet until you are instructed to do so, this exam has 20 problems in 11 di erent pages (including this cover page). Once you are allowed to open the exam, make sure you have a complete test: do any necessary work for each problem on the space provided or on the back of the pages of this test booklet. Circle your answers in this test booklet: each problem is worth 10 points for a maximum of 200 points. Additionally, all violators will be reported to the o ce of the dean of students. I have read and understand the above statements regarding academic dishonesty: Page 3/11: what is the x-cordinate of the point where the curve de ned by h2 t, t 1, 1i intersects the cone z2 = x2 + y2 for t > 0, 4.