Question

Question #e5ba1

Answer 1

Please see below.

Explanation:

As I understand such a modeling appears to have used polynomials of degree `3` and `2` and as such it should appear as

`N=−0.028t^3+0.06t^2+0.1t+17` and

`U=−0.38t^2+1.5t+42`

As you may see ^3 is used for writing a cube and ^2 is used for writing a square. They will appear as (here given in bold letters)

N=−0.028t^3+0.06t^2+0.1t+17 and

U=−0.38t^2+1.5t+42

Hashes are added so that they look like a mathematical function or formula. To write such a polynomial, you can have details at https://socratic.org/help/symbols

If you have to work out value of a function say for `t=5`, it is

`N=−0.028xx5^3+0.06xx5^2+0.1xx5+17`

`=−0.028xx125+0.06xx25+0.1xx5+17`

`=-3.5+1.5+0.5+17=15.5` and

`U=−0.38t^2+1.5t+42`

`=−0.038xx25+1.5xx5+42`

`=-0.95+7.5+42=48.55`

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