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'Y' is the luma or luminance component and UV are the two "difference" chrominance components that define a YUV color. You can think of the luminance component as the intensity of the color. The letters themselves do not each represent a particular word - think of them more like variables in a math equation. It looks like this:

U = B - Y (blue - luminance)

V = R - Y (red - luminance)

Georges Valensi came up with this scheme and patented it in 1938, and the broadcast industry adopted it. It prevented B&W TVs from becoming immediately obsolete when television switched to transmitting a color signal because a B&W TV could take the color signal and display the colors as shades of gray.

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Q: What do the U and V stand for in YUV formatting?
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What does the equation v equals u plus at mean and what do the letters stand for?

v = final velocityu = initial velocitya = rate of accelerationt = timeA body, that starts off with a velocity u, and has a constant rate of acceleration a, will have a velocity v after a time t (with appropriate units).


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How can you use a discriminant to write an equation that has two solutions?

If the discriminant is greater than zero (b^2 - 4ac) > 0, then the equation have two roots that are real and unequal. Further, the roots are rational if and only if (b^2 - 4ac) is a perfect square, otherwise the roots are irrational.Example:Find the equation whose roots are x = u/v and x = v/uSolution:x = u/vx - u/v = 0x = v/ux - v/u = 0Therefore:(x - u/v)(x - v/u) = (0)(0) or(x - u/v)(x - v/u) = 0Let c = u/v and d = v/u. We can write this equation in equation in the form of:(x - c)(x - d) = 0x^2 - cx - dx + CD = 0 orx^2 - (c +d)x + CD = 0The sum of the roots is:c + d = u/v + v/u = (u)(u)/(v)(u) + (v)(v)/(u)(v) = u^2/uv + v^2/uv = (u^2 + v^2)/uvThe product of the roots is:(c)(d) = (u/v)(v/u) = uv/vu = uv/uv = 1Substitute the sum and the product of the roots into the formula, and we'll have:x^2 - (c +d)x + CD = 0x^2 - [(u^2 + v^2)/uv]x + 1 = 0 Multiply both sides of the equation by uv(uv)[x^2 - ((u^2 + v^2)/uv))x + 1] = (uv)(0)(uv)x^2 - (u^2 + v^2)x + uv = 0 which is the equatiopn whose roots are u/v, v/u


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1/f = 1/u+1/v Subtract 1/v from both sides: 1/f-1/v = 1/u Multiply all terms by fv: fv/f - fv/v = fv/u => v-f = fv/u Multiply all terms by u: u(v-f) = fv Divide both sides by v-f which will then make u the subject of the formula: u = fv/v-f

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