Try this solution (see the attachment), note:
1. the word 'ctgx' means 'cotangens x'; 2. this equation has roots not for all the real number 'r', it is shown in the 2-d line of the answer; 3. the answer is marked with red colour.
Answer:
There's no question buddy
8
Step-by-step explanation:
I need the answer too lol, does anyone knows it ?
inverse
¬ is the symbol for not. When we have not a implies not b we have a inverse
