Question

A function g is given as g(x) = ax + bx + c. It is known that g(0) = 1, g(1) = 2 and g(-1) = 4. (a) Find the values of a, b and c.

Please show detailed steps. (Don't just write down the final answers) Tq​

Answer 1

{2;-1;1}.

Explanation:

it is possible to make up the system of three equations:

a) g(0)=1: c=1;

b) g(1)=2: a+b+c=2;

c) g(-1)=4: a-b+c=4;

2) the system has the only solution:

`\left[\begin{array}{ccc}c=1\\a+b+c=2\\a-b+c=4\end{array} \ = > \ \left[\begin{array}{ccc}a= 2\\b=-1\\c=1\end{array}`

4) finally, a=2; b=-1 and c=1.