Question

evaluate the expression for j = -4. -3j =

Explanation:

Step1: Substitute \( j = -4 \) into the expression

We have the expression \(-3j\), and we need to replace \( j \) with \(-4\). So the expression becomes \(-3\times(-4)\).

Step2: Multiply the numbers

When we multiply two negative numbers, the result is positive. So \(-3\times(-4)=12\).

Answer:

\( 12 \)