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Find K if FOF [K]=5 where f [k]= 2k-1

User Mohd Mufiz
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1 Answer

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To find FOF[K] when f[k] = 2k - 1, we first need to find F[K], which is equal to 2K - 1. We can then substitute this value into the expression for FOF[K]:

FOF[K] = F[F[K]]

FOF[K] = F[2K - 1]

FOF[K] = 2(2K - 1) - 1

FOF[K] = 4K - 3

Now we know that FOF[K] = 4K - 3. We can set this equal to 5 and solve for K:

4K - 3 = 5

4K = 8

K = 2

Therefore, if F[K] = 2K - 1, then FOF[K] = 5 when K = 2.
User Rayon Nunes
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