If y=y(x) is the solution of the differential equation dxdy=(tanx−y)sec2x , x∈(−2π,2π) , such that y(0)=0, then y(−4π) is equal to:
Held on 10 Apr 2019 · Verified 6 Jul 2026.
e1−2
2+e1
e−2
21−e
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