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If f(x)=2x^(2)+7x-9 and g(x)=2x+3, then ...

If `f(x)=2x^(2)+7x-9 and g(x)=2x+3`, then find the vlaue of `g(g(x))` at `x=2`

A

92

B

39

C

29

D

none of these

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AI Generated Solution

The correct Answer is:
To find the value of \( g(g(x)) \) at \( x = 2 \), we will follow these steps: ### Step 1: Calculate \( g(2) \) Given the function \( g(x) = 2x + 3 \), we first need to find \( g(2) \). \[ g(2) = 2(2) + 3 \] \[ g(2) = 4 + 3 = 7 \] ### Step 2: Calculate \( g(g(2)) \) Now, we need to find \( g(g(2)) \), which is \( g(7) \). Using the function \( g(x) = 2x + 3 \): \[ g(7) = 2(7) + 3 \] \[ g(7) = 14 + 3 = 17 \] ### Final Answer Thus, the value of \( g(g(2)) \) is \( 17 \). ---
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ARIHANT SSC-FUNCTIONS AND GRAPH-EXERCISE(LEVEL 1)
  1. A decimal number 'm' (say) can be expressed as m=1+D where lrarr i...

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  2. A decimal number 'm' (say) can be expressed as m=1+D where lrarr i...

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  3. f(x)=(1)/(x),g(x)=(x+(1)/(x)), then which of the following is true?

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  4. If f(x)=2x^(2)+7x-9 and g(x)=2x+3, then find the vlaue of g(g(x)) at x...

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  5. Find f(f(f(f(f(2)))))) if f(x)=(x+1)/(x-1),x ne 1

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  6. f(x)=1-h(x), g(x)=1-k(x), h(x)=f(x)+1 f(x)=g(x)+1, k(x)=j(x)+1 Fin...

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  7. f(x) = 1 - h(x), g(x) = 1 - k(x), h(x) = f(x) + 1 f(x) = g(x) + 1, k...

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  8. If f(x) and g(x) are odd functions of x, then which of the following i...

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  9. If f(x) is an even function of x and g(x) is an odd function then whic...

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  10. If y=" min "(x^(2)+2, 6-3x), then the greatest value of y for x gt0

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  11. If p^(2)+q^(2)+r^(2)=1, then the maximum vlaue of pqr is :

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  12. A train travels 360 km at a uniform speed. If the speed had been 5 km/...

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  13. Which of the following expression gives negative value ?

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  14. Which of the following expression is necessarily greter than 1?

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  15. A(x, y, z)=" min. "(x+y, y+z, z+x) B(x, y, z)="max "(x-y, y-z, z-x) ...

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  16. A(x, y, z)=" min. "(x+y, y+z, z+x) B(x, y, z)="max "(x-y, y-z, z-x) ...

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  17. A(x, y, z)=" min. "(x+y, y+z, z+x) B(x, y, z)="max "(x-y, y-z, z-x) ...

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  18. A(x, y, z)=" min. "(x+y, y+z, z+x) B(x, y, z)="max "(x-y, y-z, z-x) ...

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  19. A(x, y, z)=" min. "(x+y, y+z, z+x) B(x, y, z)="max "(x-y, y-z, z-x) ...

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  20. What is the maximum possible value of xy, where |x+5|=8 and y=9-|x-4|

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