Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Differential Equations
Solution of the differential equation tan y sec2x dx + tan x sec2y dy = 0 is :
1
tan x + tan y = k
2
tan x − tan y = k
3
\(\rm\frac{\tan x}{\tan y}\) = k
4
More than one of the above
5
None of the above