For example: 2? , where 3 is the index and 2 is the radix.
Extended data:
Form of index: fraction.
The exponent is the power of the fraction-the power of the fraction exponent is the collective name of the power of the positive fraction exponent and the power of the negative fraction exponent. The exponential power of a fraction is a number whose exponent is a fraction, and the exponential power of a positive number is another expression of the radical. The fractional exponential power of negative numbers can not be calculated by roots, but by other algorithms, which is the focus of high school algebra.
Exponential form: negative number.
When the exponent of a power is negative, it is called "negative exponential power". The -r power of a positive number A (R is any positive number) is defined as the reciprocal of the R power of A. ..
Mathematical explanation of exponential function;
Exponential function is an important function in mathematics. This function applied to the value e is written as exp(x). It can also be written as ex, where e is a mathematical constant and the base of natural logarithm, which is about equal to 2.7 1828 1828, also known as Euler number.
When a> is in 1, the negative value of exponential function to x is very flat, and the positive value to x rises rapidly. When x equals 0, y equals 1. When 0
Algorithm of exponent:
1, [a m] × [a n] = a (m+n) is the same as the base power, the base number is constant, and the exponents are added.
2.[a m]⊙[a n]= a(m-n) Divide by the power with the same base, and subtract the exponent with the same base.
3. [a m] n = the power of a (Mn), the cardinality is unchanged, exponential multiplication?
4. The power of the product of [ab] m = (a m) × (a m) is equal to the power of each factor, and then multiplied by the obtained power.