If you just need to calculate an arithmetic expression, enter it using keyboard or Math Panel and press Enter. You will see result in Result Zone of Calc Window.
The syntax of expressions is quite ordinary, you combine figures with arithmetic operations and use parentheses to change order of operations. See details in Syntax of Expressions.
Mind that spaces are not allowed within an expression. You can use spaces to separate expressions on the same line.
Examples:
1+3/4+sqrt(4) (1+3.12)^2/(1*6.2-14)+5
If you need to calculate values of a function, it is recommended to assign the function’s expression to a variable. The variable will stand for function’s name. Then assign values to function’s argument(s) and type function’s name. Values of the function for given values of argument(s) will appear in Result zone of Calc Window.
It is convenient to use Func Panel while entering math expressions. Mind that names of variables and math functions are case-sensitive.
Examples:
F=sin(2*x)+ln(3*y) x=3 y=5 F ; value of sin(2x)+ln(3y) for x=3 and y=5
F1=diff(sin(x)^2+4,x) x=pi F1 ; value of derivative of sin2(x)+4 for x=π