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**1. Homework Statement . The correct answer is E**

**2. Homework Equations :Procedure from our text:**

"Step 1. Determine the differential equation for the given family F(x, y,C) = 0.

Step 2. Replace y' in that equation by −1/y'; the resulting equation is the differential equation

for the family of orthogonal trajectories.

Step 3. Find the general solution of the new differential equation. This is the family of orthogonal

trajectories."

## The Attempt at a Solution

I can't get the answer to be in the correct format. Please help!

Thank you all for looking/helping!