The third one
3(x+5) = 3 * x + 3 * 5
I think you meant "y = 4 arccot (x)."
This is equivalent to:
y
---- = arccot x
4
and so cot (y/4) = x
Step-by-step explanation:
this is the answer of this question
This can be solved by finding their point of intersection on the graph, which is at point (1,3).