1 NI- - -1 FIGURE 1. A strophoid. 3. (6 POINTS EACH) Consider the curve given by the parametric equations 1 - 12 13 -t t(1 - t? ) 1 = 1+ +2 and y = 1412 1 + +2 This curve is called a strophoid (or sometimes a right strophoid).c. Calculate the second derivative d'y/dr- and determine, in terms of the pa- rameter t, when the curve is concave up and when it is concave down. Find the r and y-coordinates of all inflection points