Numerical Capabilities

• Arbitrary precision is possible
  • evalf(Pi,15);
• The variable “Digits” determines the default precision of evalf
  • Digits;
  • evalf(Pi);
• “Digits” can be reset; note that the operator “:=“ is used to assign a value
  • Digits := 30;
  • evalf(Pi);
  • Digits := 10;
• Notation
  • addition, subtraction x+y, x–ymultiplication, division: x*y, x/yexponentiation: x^y or x**y
  • some constants: I, Pi, infinity

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