Mathematics · Numerical Analysis

Taking the interval of differencing as h, what is the value of the second forward difference Δ2 cos(2x)?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1-4 sin2(h) cos(2x + 2h)
2-4 sin2(h) cos(2x + 2h)✓
34 sin2(h) sin(2x + h)
4None of these

Correct answer

-4 sin2(h) cos(2x + 2h)

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Taking the interval of differencing as h, what is the value of the second forward difference Δ2 cos(2x)?

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