Consider the function f:R→R defined by f(x)=2x1+9x2. If the composition of f,(f∘f∘f∘⋯∘....

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Consider the function f:R→R defined by f(x)=2x1+9x2. If the composition of f,(f∘f∘f∘⋯∘f)⏟10 times (x)=210x1+9αx2, then the value of 3α+1 is equal to _____ .
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