>choose [number of total objects (n)] [number of objects to choose (k)]

'>choose' command helps in solving combination problems. It tells you the number of ways in which 'k' objects can be chosen from a total of 'n' objects.

Uses modified nCk formula

>perm [number of total objects (n)] [number of objects to permute (k)]

'>perm' command helps in solving permutation problems. It tells you the number of ways in which 'k' objects can be arranged(permuted) from a total of 'n' objects.

Uses modified nPk formula

>quad [a] [b] [c]

In standard form: ax²+ bx + c = 0

'>quad' command helps in solving quadratic equations. Convert give quadratic equation in standard form and give only the coefficients in correct order.

Uses Formula to Solve Quadratic Equations