Implicit and Logarithmic Differentiation
Practice Problem Answers
Practice 4: To find where the parabola crosses the y-axis, we can set and solve for the values of .
Replacing with 0 in , we have so and The parabola crosses the -axis approximately at the points and .
From Example 4, we know that , so
at the point , the slope is approximately , and
at the point , the slope is approximately .