Created by Tomer Gal.

Problem

A curve in the plane is defined parametrically by the equations x, equals, 8, e, start superscript, 3, t, end superscript and y, equals, cosine, left parenthesis, 4, t, right parenthesis.
Find start fraction, d, y, divided by, d, x, end fraction.
Please choose from one of the following options.