GKFix MCQ Question

What is the general equation for a standing wave on a string fixed at both ends?

• A. y(x, t) = a sin(kx – ωt)
• B. y(x, t) = a cos(kx + ωt)
• C. y(x, t) = 2a sin kx cos ωt
• D. y(x, t) = a sin ωt cos kx