# Math Help - Eulers formula

1. ## Eulers formula

I should write the 1. x(t) in the form of 2. x(t) using Euler's formula. Unfortunatelly, I couldn't do that:S Thanks for help me!

2. Originally Posted by duss
I should write the 1. x(t) in the form of 2. x(t) using Euler's formula. Unfortunatelly, I couldn't do that:S Thanks for help me!

Please reformulate your question into a more easily understood form#

CB

3. Originally Posted by CaptainBlack
Please reformulate your question into a more easily understood form#

CB

I would like to write this:
x(t)=cos(ω1t+π/2)cos(ω1t)

in that form
x(t)=Acos(ω2t+ϕ)
with the help of Euler’s formula.