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if y= sin mx, them the value of the ...

if y= sin mx, them the value of the determinant
`|{:(y,,y_(1),,y_(2)),(y_(3),,y_(4),,y_(5)),(y_(6),,y_(7),,y_(8)):}|" Where " y_(n)=(d^(n)y)/(dx^(n)) " is "`

A

1

B

0

C

-1

D

none of these

Text Solution

Verified by Experts

`D=|{:( sin px, p cos px, -p^(2) sin px),(-p^(3)cos px, p^(4) sin px, p^(5) cos px),(-p^(6) sin px ,-p^(7)cos px , p^(8) sin px):}|`
`=p^(9)|{:(sin px, p cos px, -p^(2) sin px),(-cos px ,p sin px , p^(2) cos px),(-sin px , -p cos px, -p^(2)sin px):}|`
`=-p^(9)|{:(sin px , p cos px, -p^(2) sin px),(cos px , p sin px , p^(2) cos px),(sin px, p cos px,-p^(2)sin px):}|=0`
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