Exponents

• How to Calculate an nth Root on a Simple Calculator
  To find the nth root, raise the number to the reciprocal power. If your calculator has only basic operations, use Newton's iteration and check the result.
• How to Calculate a Number Raised to a Decimal Power
  Convert a decimal exponent to a fraction for exact roots, or use x^y = exp(y ln x) to calculate a decimal power numerically on a calculator.
• How to Find an Antilog on a Simple Calculator
  To find a common antilog, enter the exponent into 10^x, often SHIFT or 2nd plus LOG. For another base, calculate that base to the exponent.
• Why Is the Principal Even Root Nonnegative?
  The real even-root symbol means the nonnegative root; it equals zero for zero, while equations with even powers can have positive and negative solutions.