Question

помощь
1) tgx>4
2) tgx≤5
3) tgx<-4
4) tgx≥-5​

Answer 1

1) tgx>4

arctg4+πn<х< π/2+πn n∈Z

2) tgx≤5

-π/2+πn < х ≤ arctg5+πn; n∈Z

3) tgx<-4

-π/2+πn< х < arctg(-4)+πn; n∈Z

-π/2+πn<х< -arctg4+πn; n∈Z

4) tgx≥-5​

arctg(-5)+πn ≤ х < π/2+πn; n∈Z

-arctg5+πn ≤ х <π/2+πn; n∈Z