Variables

Variables

Sometimes, it is necessary to hold result of computation and to reuse it in future.

For example, to compute \[(1+2+3+\cdots+10)+(1+2+3+\cdots+10)^2+(1+2+3+\cdots+10)^3\]

1. Store the result of $(1+2+3+\cdots+10)$ to a variable N.
2. Compute the result of $$N+N^2+N^3$$.

N = 1+2+3+4+5+6+7+8+9+10
N + N^2 + N^3

We use the operator = for storing (assignment),

i.e. to store the result of right-hand-side to the variable on the left.

When an assignment is used, the result is suppressed.

Question

1. What is the result of $$x+x^2+x^3$$?
2. What is the result of the following code?

a = 10
a = a^2
a = a^2
show(a)