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JEE Mains · Maths · STD 12 - 1. relation and function

જો  \(f(x)\) અને \(g(x)\) એ બે બહુપદી છે કે જેથી \(P ( x )=f\left( x ^{3}\right)+ xg \left( x ^{3}\right)\) એ  \(x^{2}+x+1\) દ્વારા વિભાજિત થાય છે તો \(P(1)\) ની કિમંત મેળવો.

  1. A \(10\)
  2. B \(4\)
  3. C \(7\)
  4. D \(0\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(0\)

Step-by-step Solution

Detailed explanation

\(P(x)=f\left(x^{3}\right)+\operatorname{xg}\left(x^{3}\right)\) \(P (1)=f(1)+ g (1) .....(1)\) Now \(P ( x )\) is divisible by \(x ^{2}+ x +1\) \(\Rightarrow P ( x )= Q ( x )\left( x ^{2}+ x +1\right)\) \(P ( w )=0= P \left( w ^{2}\right)\) where \(w , w ^{2}\) are non-real…
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