Level:
Project ID:
9000086704
Accepted:
1
Clonable:
0
Easy:
1
Identify the optimal substitution which simplifies the following equation as much as
possible.
\[
\mathop{\mathrm{tg}}\nolimits ^{2}v -\mathop{\mathrm{cotg}}\nolimits ^{-1}v = 2
\]
\(\mathop{\mathrm{tg}}\nolimits v = t\)
\(v^{-1} = t\)
\(\mathop{\mathrm{cotg}}\nolimits v = t\)
Equation is not convenient for a substitution.