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f(x)=x^2+ax+b cos x,a being an integral and b is a real no. The ordered pairs(a,b) for which the equation f(x)=0 and f(f(x))=0 have the same (non empty) set of real roots is/are:(A) (0,1) (B)(1,0) (C)(2,0) (D)(5,0)

f(x)=x^2+ax+b cos x,a being an integral and b is a real no. The ordered pairs(a,b) for which the equation f(x)=0 and f(f(x))=0 have the same (non empty) set of real roots is/are:(A) (0,1) (B)(1,0) (C)(2,0) (D)(5,0)

Grade:11

1 Answers

Anish Singhal
askIITians Faculty 1192 Points
5 years ago
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