# Questions & Answers

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- A particle moves along the curve y=2 sin(pi x/2). As the particle passes through the point (1/3, 1), its x-coordinate increases at a rate of sqrt{10} cm/s. How fast is the distance from the particle to the origin changing at this instant?
- Find the particular solution that satisfies the differential equation and the initial condition.
- Find an orthogonal basis for the column space of the matrix given below:
- Solve the system of equations and show all work.
- A traveling wave along the x-axis is given by the following wave function.