1.

(cosh x_(1)+sinhx_(1)) (cosh x_(2)+sinhx_(2))….. (coshx_(n)+sinhx_(n))=

Answer»

`cosh(n(x_(1)+x_(2)+…..+x_(n)) +SINH(n(x_(1)+x_(2)+…..+x_(n)))`
`cosh(x_(1)+x_(2)+…..+x_(n)) +sinh(x_(1)+x_(2)+…..+x_(n))`
`cosh(x_(1)+x_(2)+..+x_(n))-sinh(x_(1)+x_(2)+…..x_(n))`
`cosh(x(x_(1)+x_(2)+…..+x_(n))) -sinh(n(x_(1)+x_(2)+…..x_(n)))`

ANSWER :B


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