physics

A transverse wave in a wire with linear density
4.16 g/m has the form
y(x, t) = (0.76 cm) sinh(7.23 m−1) x
−(3860 s−1) ti What is its tension?

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1. Is that really a sinh (hyperbolic sine) function, or is that a typo error?

It the "i" in ti also a typo error?

With a sinh function, there is no wavelength, and I cannot figure out a wave speed, from which one could calculate the tension.

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2. sorry not hyperbolic..just plain ole sin and yes "i" is a typo

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