If U n = 2 cos nx(x=theta) then U 1 U n − U n-1 is equal to

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Piyush Rana · Answer

U 1 u n – u n – 1 2cosx.2ccosnx – 2cos(n – 1)x 4cosx.cosnx – 2(cosnxcosx – sin(nx)sinx) 4cosxcosnx – 2cosnxcosx + 2sin(nx)sinx 2cosnxcosx + 2 sin(nx).sinx 2(cosnxcosx + sin(nx)sinx) 2cos(n+1)x.

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If U n = 2 cos nx(x=theta) then U 1 U n − U n-1 is equal to

If U_n = 2 cos nx(x=theta) then U₁U_{n −}U_n-1 is equal to

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If U n = 2 cos nx(x=theta) then U 1 U n − U n-1 is equal to

If Un = 2 cos nx(x=theta) then U1Un − Un-1 is equal to

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If U_n = 2 cos nx(x=theta) then U₁U_{n −}U_n-1 is equal to