Y/n (yourname), darling, you're my best friend But there's a few things that you don't know of
Why I borrow your lipstick so often
I'm using your shirt as a pillow case
I wanna ruin our friendship
We should be lovers instead
I don't know how to say this
'Cause you're really my dearest friend​

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Which of the following best describes the delian problem?

Dots sells a total of 279 t-shirts ($2) and shorts ($4). in april total sales were $670. how many t-shirts and shorts did dots sell?