Question
Question: \({\tan h}(x + y)\) equals....
tanh(x+y) equals.
A
1−tanhxtanhytanhx+tanhy
B
1+tanhxtanhytanhx+tanhy
C
1−tanhxtanhytanhx−tanhy
D
1+tanhxtanhytanhx−tanhy
Answer
1+tanhxtanhytanhx+tanhy
Explanation
Solution
It is obvious.
tanh(x+y) equals.
1−tanhxtanhytanhx+tanhy
1+tanhxtanhytanhx+tanhy
1−tanhxtanhytanhx−tanhy
1+tanhxtanhytanhx−tanhy
1+tanhxtanhytanhx+tanhy
It is obvious.