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## Homework Statement

(a) Write the expression for

*y*as a function of

*x*and

*t*in SI units for a sinusoidal wave traveling along a rope in the negative

*x*direction with the following characteristics:

*A*= 5.00 cm, λ =85.0 cm,

*f*= 5.00 Hz, and

*y*(0,

*t*) = 0 at

*t*= 0. (Use the following as necessary:

*x*and

*t*.)

Write the expression for

*y*as a function of

*x*and

*t*for the wave in part (a) assuming

*y*(

*x*, 0) = 0 at the point

*x*= 17.0 cm. (Use the following as necessary:

*x*and

*t*.)

## Homework Equations

Conversion equations from f and lambda to k and omega

y(x,t) = Asin(kx(+/-)wt)

## The Attempt at a Solution

$$5\sin \left(10\pi t+\frac{2}{85}\pi x-.4\pi \right)$$

Why is this wrong? I don't understand. I put it into desmos, and it shows AT LEAST that at at y(17,0) = 0. Also based off the slider, it seems to be going in the negative x-direction, which is correct.