subtraction

Purpose

Subtracts two matrices, vectors, or scalars element-by-element.

Format

y = a - b

Parameters

param a:

Left operand.

type a:

matrix, vector, or scalar

param b:

Right operand.

type b:

matrix, vector, or scalar

Returns

return y:

Element-by-element difference of a and b.

rtype y:

matrix

Examples

a = { 10, 20, 30 };
b = { 1, 2, 3 };
y = a - b;

y =    9.0000000
      18.0000000
      27.0000000

Scalar Subtraction

x = { 10, 20, 30 };
y = x - 5;

y =    5.0000000
      15.0000000
      25.0000000

Remarks

• If both operands are matrices, they must be conformable (same dimensions) or one must be a scalar.

• Scalar operands are broadcast to match the dimensions of the matrix operand.

See also

Operators addition, element-by-element-multiplication