Prove that (coshx+sinhx)^(n)=cosh(nx)+si...

Prove that `(coshx+sinhx)^(n)=cosh(nx)+sinh(nx)`

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Prove that (coshx+sinhx)^(n)=cosh(nx)+sinh(nx)
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By Mathematical Induction , show that 49^(n)+16n-1 is divisible by 64 ...
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