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The video uses an animation of a spike-like function $f(x)$ multiplied by a variable-frequency sine wave $\sin$(bx). By continuously decreasing the frequency parameter b from 1.000 to 0.000, the animation shows how the product $f(x)$$\sin$(bx) changes shape.

Conditions: The parameter b is displayed as nonnegative real values decreasing from 1.000 to 0.000.; No numerical integral or transform value is computed in this example.

The video uses an animation of a spike-like function $f(x)$ multiplied by a variable-frequency sine wave $\sin$(bx). By continuously decreasing the frequency parameter b from 1.000 to 0.000, the animation shows how the product $f(x)$$\sin$(bx) changes shape.

Conditions: The parameter b is displayed as nonnegative real values decreasing from 1.000 to 0.000.; No numerical integral or transform value is computed in this example.