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Decompose the function f(g(h(x)))=3(cosx+6)f(g(h(x)))=3^{(\cos x+6)} into f(x)f(x), g(x)g(x) and h(x)h(x).

Full solution

Q. Decompose the function f(g(h(x)))=3(cosx+6)f(g(h(x)))=3^{(\cos x+6)} into f(x)f(x), g(x)g(x) and h(x)h(x).
  1. Identify Functions: To decompose the function f(g(h(x)))=3cosx+6f(g(h(x))) = 3^{\cos x + 6}, we need to identify the innermost function, the middle function, and the outermost function.
  2. Innermost Function: The innermost function is h(x)h(x), which is the argument of the cosine function. Since the cosine function is cos(x)\cos(x), we can deduce that h(x)=xh(x) = x.
  3. Middle Function: The middle function is g(x)g(x), which is the argument of the exponential function. Since the exponential function is 3(cosx+6)3^{(\cos x + 6)}, and we have already identified that h(x)=xh(x) = x, we can deduce that g(x)=cos(h(x))+6=cos(x)+6g(x) = \cos(h(x)) + 6 = \cos(x) + 6.
  4. Outermost Function: The outermost function is f(x)f(x), which is the exponential function. Since the base of the exponential function is 33 and the exponent is the result of g(x)g(x), we can deduce that f(x)=3xf(x) = 3^x.

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