TS EAMCET · Maths · Functions
If \(f(x)\) is a real valued function defined by \(f(x)=\frac{a x^{10}+b x^8+c x^6+d x^4+e x^2+12 x+15}{x}\) \((x \neq 0)\) and \(f(4)=-4\), then \(f(-4)=\)
- A 28
- B 39
- C 4
- D 24
Answer & Solution
Correct Answer
(A) 28
Step-by-step Solution
Detailed explanation
\(f(x)=\frac{a x^{10}+b x^8+c x^6+d x^4+e x^2+12 x+15}{x}\) and \(f(4)=-4\) \(\because f(x)=a x^9+b x^7+c x^5+d x^3+e x+12+\frac{15}{x}\) \(\therefore f(-x)=-a x^9-b x^7-c x^5-d x^3-e x+12-\frac{15}{x}\) \(\therefore f(x)=f(-x)=24\)…
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