loverofkitties345 loverofkitties345

16-02-2017
Mathematics

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if f(n)=f(n-1)+8 and f(1)=7, what is f(50)

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LammettHash LammettHash

16-02-2017

[tex]f(n)=f(n-1)+8=f(n-2)+2\times8=f(n-3)+3\times8=\cdots=f(1)+(n-1)\times8[/tex]

Since [tex]f(1)=7[/tex], you have

[tex]f(50)=f(1)+(50-1)\times8=399[/tex]

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