Now try these problems

MATHEMATICS · Subjective · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

Now try these problems. The answers are in Chapter 23, starting on page 517. 7. The motion of a particle is given by

x=\ln t

and

y=t^{2}-4 t

. Find the coordinates of the particle when its instantaneous direction of motion is horizontal.