Question

Creative Question:
f(x) = x3 + kx2 - 4x – 12 and g (a)
1+
are two functions

b. If f(-2) = 0 then show that Vk is an irrational number



step by step explanation plz
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Answer 1

Put x=0 to get f(12)=f(0)+f(12) ; so f(0)=0

Put x=-12 to get f(0)=f(-12)+f(12)

Thus 0=f(-12)+f(12)

Thus f(-12)=-f(12)

.

.

Consider the function f(t)=t .

See that it satisfies our functional Equation.

But now f(24) ≠ 0 . Thus that is not true.

✍hope its help u army

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