# Tagged Questions

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### How do component wavelengths *add* to wavelength of light color?

Say you have 3 leds at frequencies (or wavelengths) $u_1, u_2, u_3$ in Hz (or nm). Then how do you calculate the apparent or center of, or blah frequency (I don't know what I want really) of the ...
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### Subject to in equation

I have the formula below: $$\hat x_2=\arg\min\lVert x\rVert_2\quad\text{subject to}\quad A{x}=y.$$ But I didn't understand what was meant by "subject to" ? does $x$ is replaced by $x_2$? please can ...
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### Can the differentiating and squaring process in the cochlea explain a reported dichotic stimulation experiment?

On this math.stackexchange on url What is Octave Equivalence? in an answer on the related ( octave equivalence ) question is stated: Mathematically, this signifies that the mammalian cochlea ...
I have the transfer function $$H(s) = \frac{s+1}{0.1s+1}$$ I apply the Bilinear Rule with a sampling time T =.25 sec to the transfer function and get a z-domain representation of H(z) = ...
A discrete one-dimensional model of optical imaging looks like this: $I(r) = \sum_i e_i P(r - r_i)$ Here, the $e_i$ are point light sources at locations $r_i$ in the object and $P$ is a point spread ...