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If f(x) = x log x and g(x) = 10^(x) , th...

If f(x) = x log x and g(x) = `10^(x)` , then g(f(2)) =

A

24

B

17

C

4

D

2

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The correct Answer is:
To solve the problem, we need to evaluate \( g(f(2)) \) where \( f(x) = x \log x \) and \( g(x) = 10^x \). ### Step 1: Calculate \( f(2) \) We start with the function \( f(x) \): \[ f(x) = x \log x \] Substituting \( x = 2 \): \[ f(2) = 2 \log 2 \] ### Step 2: Simplify \( f(2) \) Using the property of logarithms, we can express \( 2 \log 2 \) as: \[ f(2) = \log(2^2) = \log 4 \] ### Step 3: Calculate \( g(f(2)) \) Now we need to evaluate \( g(f(2)) \): \[ g(f(2)) = g(\log 4) \] Using the definition of \( g(x) \): \[ g(x) = 10^x \] Substituting \( \log 4 \) into \( g \): \[ g(\log 4) = 10^{\log 4} \] ### Step 4: Simplify \( g(\log 4) \) Using the property of logarithms that states \( a^{\log_a b} = b \), we have: \[ 10^{\log 4} = 4 \] ### Final Answer Thus, the value of \( g(f(2)) \) is: \[ \boxed{4} \]

To solve the problem, we need to evaluate \( g(f(2)) \) where \( f(x) = x \log x \) and \( g(x) = 10^x \). ### Step 1: Calculate \( f(2) \) We start with the function \( f(x) \): \[ f(x) = x \log x \] Substituting \( x = 2 \): ...
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ENGLISH SAT-MODEL TEST 5-MCQs
  1. A point has rectangular coordinates (3,4) . The polar coordinates are ...

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  2. If f(x) = x^(2) - 4 , for what real number values of x will f(f(x))= 0...

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  3. If f(x) = x log x and g(x) = 10^(x) , then g(f(2)) =

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  4. If f(x) = x^(sqrtx) , then f(sqrt2)=

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  5. The figure above shows the graph of 5^(x) . What is the sum of the are...

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  6. (p,q) is called a lattice point if p and q are both integers . How man...

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  7. If 9^(x) = sqrt3 and 2^(x+y) = 32 , then y =

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  8. For all real numbers x , f(2x) = x^(2) - x + 3 . An expression for f(x...

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  9. For what value (s) of k is x^(2) - kx + k divisible by x - k ?

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  10. If the graphs of x^(2) = 4(y+9) and x + ky = 6 intersect on the x-axis...

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  11. The length of the major axis of the ellipse ((x-3)^(2))/(16) + ((y+2...

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  12. If f(n) = {{:( (f(n-1))/(2) " when " fn-1 "is an even number"), (3* f(...

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  13. How many different rearrangements of the letters in the word CONTEST s...

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  14. Which of the following translations of the graph of y = x^(2) would re...

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  15. How many positive integers are there in the solution set of (x)/(x-2) ...

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  16. During the year 1995 the price of ABC Company stock increased by 125% ...

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  17. If x(0) = 3 and x(n+1) = x(n) sqrt(xn + 1) , then x(3) =

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  18. When the smaller root of the equation 3x^(2) + 4x - 1 = 0 is subtracte...

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  19. A committee of 4 is to be selected from a group of 7 women and 4 men ....

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  20. If x , y ,and z are positive , with xy = 24 , xz = 48 , and yz = 72 , ...

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