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Prove '2xy is less than equal to x square plus y square'?
(x-y)2 is a square so (x-y)2 >= 0 expanding, x2 - 2xy + y2 >= 0 so x2 + y2 >= 2xy or 2xy <= x2 + y2
X plus y squared?
(x+y)2 = x2 + 2xy + y2
X 2 plus y 2 - 10x plus 4y - 52 equals 0?
x2 + y2 - 10x + 4y - 52 = 0 x2 - 10x + y2 + 4y = 52 Complete the square (x2 - 10x + 25) + (y2 + 4y + 4) = 52 + 25 + 4 (x - 5)2 + (y + 2)2 = 81 (x - 5)2 + (y - -2)2 = 92 This is the equation of a circle with center (5, -2), and radius 9.
What is the steepness of a line on a graph represents?
The change in the y-value over the x-value, the slope, m, (y1-y2)/(x1-x2).
Z2 equals x2 plus y2?
What are we solving here for, Z, X, or Y?If solve for Z then the answer would be z = x + yIf solve for X then the answer would be z = z - yIf solve for Y than the answer would y = z - xHope this help.
X2 plus y2 equals 4?
The graph of that equation is a circle, centered at the origin, with radius = 2 .
How can you graph x2 - y2 equals 9?
Therefore x2=9+y2. And x is the square-root of that (with two values plus and minus). Choose a value of y, and work out x2 and therefore the values of x. Plot the two (+ and -) on a graph and continue for more values of y.
Equation of director circle of the circle x2 plus y2 equals r2 is?
x2 + y2 = 2r2
Find the radius for a circle with the equation x2 plus y2 equals 9?
Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..
X2 plus y2 equals 100 what is the lengrth of the circles radius?
X2 + y2 = 100 = r2 r = 10
X2 plus y2 equals 49 what is its radius?
7
What is the radius of x2 plus y2 equals 9?
X2 or 2 times x?
How do you solve the equation. X2 plus y2 plus z2 - 4x plus 4y plus 2z plus 5 equals 0 x2 plus y2 plus z2 equals 4?
(2-r)e-rr
X2 plus y2 plus 4x - 2y - 5 equals 0?
No.
X2 y2 equals 121 what is the radius?
If this is the equation of a circle, the answer is 11, except that there needs to be a plus sigb between the x2 and the y2
X2 plus y2 equals 16 radius of the circle?
4
Find the radius of x2 plus y2 equals 9?
3
