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The answer, for y as a function of x, depends on the range of y.
Over the real numbers, it is not a function because a function cannot be one-to-many. But it is always possible to define the domain and range in such a way that the mapping in not one-to-many.
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What is 81 squared?
81 x 81 = 6561
What to the second power equals 81?
It is: 9^2 = 81
The second power of 9 equals?
81. 92 = 9 * 9 = 81
How many times does 5 go into 405?
yes it equals to 81
What is the square root of eighty one?
Square root of 81 has two solutions: SQRT(81) = +9 and -9 SQRT(81) = +9. The square root function has just a single output for every input. It, by definition, returns the positive 2nd root of the function. So SQRT(x) is always non-negative. This is distinctly different than saying, "what number squared equals 81?" That refers to solutions to the equation x^2 = 81, of which there are two.....+9 and -9.
How do you factorise x3 plus xy-x2y2?
x3+xy-x2y2=x(x2+y-xy2)
How do you factor 1 minus x4y4?
(1 - x4y4) = (1 + x2y2)*(1 - x2y2) = (1 + x2y2)*(1 + xy)*(1 - xy)
What fraction equals 81 percent?
81% = 81/100
What is 81 squared?
81 x 81 = 6561
What times equals 81?
How about: 9 times 9 = 81 or 81 times 1 = 81
81 times 22 equals?
81 * 22 = 1,782
How do you factor 100x2-81 equals 0?
100x2-81
What is the answer 81 - what equals 27?
54
What divided by 81 equals 9?
729/81 = 9
Which number equals 81?
3 to the power of 4 = 81
What to the second power equals 81?
It is: 9^2 = 81
What is 7 times 81?
81 times 7 or 7 times 81 equals 567
