λ = \frac{c}{f}

${\lambda = \frac{c}{f}}$

λ = \frac{c}{f}

$\lambda = \frac{c}{f}$

λ (m)

$\lambda \;\left(m\right)$

f (1 / s)

$f\;\left(1/s\right)$

f

$f$

1 / s

$1/s$

200000

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