HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 95

hp40g+.book Page 9 Friday, December 9, 2005 1:03 AM 5. Move the cursor near the positive (right-side) intersection. This cursor value will be an initial guess for T. Press until the cursor is at the intersection. The two points of intersection show that there are two solutions for this equation. However, only positive values for X make sense, so we want to find the solution for the intersection on the right side of the y-axis. 6. Return to the Numeric view. Note: the T-value is filled in with the position of the cursor from the Plot view. 7. Ensure that the T value is highlighted, and solve the equation. Use this equation to solve for another variable, such as velocity. How fast must a body's initial velocity be in order for it to travel 50 m within 3 seconds? Assume the same acceleration, 4 m/s2. Leave the last value of V as the initial guess. 3 50 Solve aplet 7-9