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If f(x)=e^x and g(x)=(log)e x(x >0), fin...

If `f(x)=e^x` and `g(x)=(log)_e x(x >0),` find `foga n dgofdot` Is `fog=gof?`

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To solve the problem step by step, we need to find \( f(g(x)) \) and \( g(f(x)) \) for the given functions \( f(x) = e^x \) and \( g(x) = \log_e x \) (where \( x > 0 \)). We will also determine if \( f(g(x)) = g(f(x)) \). ### Step 1: Find \( f(g(x)) \) 1. Start with the function \( g(x) = \log_e x \). 2. Substitute \( g(x) \) into \( f(x) \): \[ f(g(x)) = f(\log_e x) = e^{\log_e x} ...
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RD SHARMA-FUNCTION-Solved Examples And Exercises
  1. Show that f: RvecR , given by f(x)=x-[x], is neither one-one nor onto.

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  2. Let f: RvecR be a function given by f(x)=a x+b for all x in R . Fi...

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  3. If f(x)=e^x and g(x)=(log)e x(x >0), find foga n dgofdot Is fog=gof?

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  4. Let f:R→R and g:R→R defined by f(x)=x 2 and g(x)=(x+1). Show that g...

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  5. Let f and g be real functions defined by f(x)=x/(x+1) a n d g(x)=x/(1...

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  6. If f(x)=sqrtx(x > 0) and g(x)=x^2-1 are two real functions, find fog a...

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  7. Let f: N-[1]vecN be defined by, f(x)= the highest prime factor ofn . S...

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  8. If f: Rvec is defined by f(x) = 3x – 5 Prove that f is a bijection. Al...

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  9. If f:(-pi/2,pi/2)->R and g:[-1,1]->R be defined as f(x)=tanx a...

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  10. If f(x)=sin^2x+sin^2(x+pi/3)+cosxcos(x+pi/3)a n dg(5/4)=1, then (gof)...

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  11. Let f,g: RvecR be a two function defined as f(x)=|x|+x and g(x)=|x|-x...

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  12. Let A={a,b,c,d} and f :A->A be given by f={(a,b),(b,d),(c,a),(d,c)} , ...

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  13. Let f={(3,1),(9,3),(12 ,4)} and g={(1,3),(3,3),(4,9),(5,9)}dot Show th...

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  14. If F :[1,oo)vec[2,oo) is given by f(x)=x+1/x ,t h e nf^(-1)(x) equal...

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  15. Let f: RrarrR and g: RrarrR be two functions such that fog(x)=sin...

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  16. Let R be the set of real numbes. If f: RvecR ;f(x)=x^2 and g: RvecR ;g...

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  17. If f(x)=-4-(x-7)^3 , write f^(-1)(x)dot

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  18. If f:{5,6}vec{2,3}a n dg:{2,3}vec{5,6} are given by f={(5,2),(6,3)} an...

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  19. If a function g={(1,1),(2,3),(3,5),(4,7)} is described by g(x)=alphax+...

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  20. Show that f: R-[0]vecR0[0] given by f(x)=3/x is invertible and it is i...

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