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The function f(x)=3x+2.
To find f(2a+b), substitute x with 2a + b
f(2a + b) = 3(2a + b) + 2
=> 6a + 3b + 2
The required value of f(2a + b) = 6a + 3b + 2
To determine the value of the fuction f, at the point x = 2a + b, we'll have to replace x by the expression 2a+b:
f(2a+b) = 3*(2a+b) + 2
We'll remove the brackets:
f(2a+b) = 6a + 3b + 2
The requested value of the function at the point x = 2a + b is f(2a+b) = 6a + 3b + 2.
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