The reciprocal of any expression is 1 divided by that expression. In this case, the reciprocal of x2 is 1/x2. This can also be written as (1/x)2, or as x-2.
+1/X
x² + x² = 2x²
It is a positive reciprocal. x-a = 1/xa or equivalently, (1/x)a
Reciprocal of 3 is 1/3 Reciprocal of 35 is 1/35. Reciprocal of x is 1/x. Reciprocal of 1/3 is 3. Reciprocal of 1/x is x. It is the inverse of a number.
It does not work that way. A negative power is simply the reciprocal. So that x-a = 1/xa The reciprocal is negative or positive according to whether the number itself is negative or positive. [And, if the number is 0, the reciprocal is not defined.]
x
A reciprocal. x is the reciprocal of y means that x*y = 1 Also, if x is the reciprocal of y then y is the reciprocal of x.
Just X to the second power minus nine. You can't subtract nine from x to the second power unless you know what x is.
It is a polynomial expression in x. What about it?
If x is the natural number, 1/x is the reciprocal.
x times x to the first power is x to the second power
Whenever you see a negative exponent (the negative 2nd power), take the reciprocal of the answer (put one over it):x-y = 1/xySo:9-2 = 1/92 = 1/81 = 0.01234567901