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If (1+x+x^2)^n = a0+a1x+a2x2 +.............

If `(1+x+x^2)^n = a_0+a_1x+a_2x_2 +..............+a_(2n)x^(2n)` then the value of `a_1+a_4+a_7+.........`

A

`3^(n-1)`

B

`3^(n-1)w`

C

`3^(n-1)w^(2)`

D

None of these

Text Solution

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The correct Answer is:
A
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