Question e5ba1

Mar 14, 2017

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#

$= - 0.95 + 7.5 + 42 = 48.55$

If you need to find how it has been formatted, click Edit above,