What is the sine of i (initial value prob)

[fufufu]

what is the sine of "i" (initial value prob)

Homework Statement

What is the sine or cosine of i?
does it make sense to ask what sine of root (-1) is?

im asking because its from 2nd order DE: t^2y'' - ty' + y = 0...y(1) = 1 y'(1) = 1


when i rearrranged and determined omega it ended up being i.. is that wrong??

(omega squared = -(1/t) so omega = i)

?

please help...thanks

Homework Equations

The Attempt at a Solution

 

[tiny-tim]

sinx = (e^ix - e^-ix)/2

so sini = … ?

 

[LCKurtz]

Homework Statement

What is the sine or cosine of i?
does it make sense to ask what sine of root (-1) is?

im asking because its from 2nd order DE: t^2y'' - ty' + y = 0...y(1) = 1 y'(1) = 1


when i rearrranged and determined omega it ended up being i.. is that wrong??

(omega squared = -(1/t) so omega = i)

You didn't show any work and I don't know what ω is that you are talking about nor what the sine or cosine functions have to do with this problem, let alone the sine of i.