SQRT

Purpose:

Calculates the square root of a scalar or series.

SQRT(val)

val

A scalar, series or table.

A real or complex scalar or a real or complex series.

W1: {1, 4, 9, 16}

W2: sqrt(W1)

W2 == {1, 2, 3, 4} where each value is the square root of the corresponding value in W1.

W1: -3..3

W2: sqrt(W1)

W1 == {-3, -2, -1, 0, 1, 2, 3}

W2 == {0 + 1.7321i, 0 + 1.4142i, 0 + 1i, 0, 1, 1.4142 + 0i, 1.7321 + 0i}

Although the series in W1 is purely real, the square root of the series is complex.

sqrt(-1)

returns 0 + 1i

sqrt(-1 + 0i)

returns 0 + 1i.

SQRT returns a complex series or scalar if the input value is complex or real and negative.