About Math Expressions in PTC Mathcad Prime
Math in a PTC Mathcad Prime worksheet appears in familiar math notation—division with a fraction bar, exponents in a raised position, and built-up fractions. PTC Mathcad Prime's equation editor works within the structure of a mathematical expression. As you type, PTC Mathcad Prime assembles the parts of an expression using the rules of precedence plus additional rules to simplify entering denominators, exponents, and expressions in radicals.
Inserting Math
Math is the default insertion mode in PTC Mathcad Prime. The initial insertion point is marked by a blue crosshair 
. You can change the current insertion point by clicking a blank spot on your worksheet. When you type letters, numbers, and operators, a math region appears with a blue vertical line at the insertion point. You can use this cursor for editing math expressions.
. You can change the current insertion point by clicking a blank spot on your worksheet. When you type letters, numbers, and operators, a math region appears with a blue vertical line at the insertion point. You can use this cursor for editing math expressions.Anything beginning with a digit is interpreted as a number by PTC Mathcad Prime.
Use periods and commas as follows:
• Period for indicating a decimal point.
• Comma for separating function arguments and matrix indices, or for indicating a step in a range.
For numbers greater than 999, do not use either a comma or a period to separate digits into groups of three. For example, to enter the number ten thousand, type 10000.
Grouping Math Terms
You can select part of math expressions using the Spacebar or the Arrow keys. You can group math terms one at a time or all simultaneously. The location of the cursor, to the left or to the right of a term, can influence the grouping. You can copy and paste the selected group to another math region. You can apply an operator to the selected group, as long as the group does not include a result:
A group that does not include a result is like a set of terms enclosed inside invisible parentheses. For example, operands are groups so when you replace or delete an operator, the groups are kept intact:
