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If the function f: R to R is defined by ...

If the function `f: R to R` is defined by `f(x)=x^(2)-6x-14`, then `f^(-1)(2)` is equal to -

A

{2, 8}

B

{-2, 8}

C

{-2, -8}

D

{2, -8}

Text Solution

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The correct Answer is:
B
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CHHAYA PUBLICATION-MCQ ZONE -Question Paper 7
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  3. If the function f: R to R is defined by f(x)=x^(2)-6x-14, then f^(-1)(...

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  4. Let f:R to R be defined by f(x)=x^(2) and g:R to R be defined by g(...

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  5. If f:R to S is defined by f(x)=sinx-sqrt(3)cosx+1 is onto, then the in...

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  6. If (x^(3))/((2x-1) (x+2) (x-3))=A+ (B)/(2x-1) +(C )/(x+2) + (D)/(x-3),...

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  7. The value of ["tan"^(-1)(m)/(n)-tan^(-1)((m-n)/(m+n))] is -

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  8. If sin^(-1)x+sin^(-1)y+sin^(-1)z=(3pi)/(2), then then the value of (x...

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  9. A real valued function f(x) stisfies the functional relation f(x-y)=f(...

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  10. The probability of having a king and a queen when two cards are drawn ...

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  11. A, B, C are mutually exclusive events such that P(A)=(3x+1)/(3),P(B)...

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  12. The chance of throwing a total of 7 or 12 with two dice is -

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  13. If A and B are two events, then the probability that one and only one ...

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  14. If A and B are two events and P(A cup B)=(5)/(6), P(A cap B)=(1)/(3) a...

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  15. If two fair coins are tossed together 5 times, then the probability o...

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  16. If n and p are two parameters of Binomial Distribution and its varian...

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  17. 5 unbiased coins are tossed at random. The probability of getting at l...

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  18. Roots of the equation 3x^2 -6x+4=0 are alpha and beta then find the ...

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