Question

решите уравнение 5 и 6 задание пж​

Answer 1

5.

ctg x = 1

x = π / 4 + πk, k ∈ Z

tg x = -1

x = - π / 4 + πk, k ∈ Z

cos x = 0

x = π / 2 + πk, k ∈ Z

sin x = 1

x = π / 2 + 2πk, k ∈ Z

6.

7ˣ = 49

7ˣ = 7²

x = 2

log₅x = 4

x=5⁴

x=625

√(x - 3) = 7       x - 3 ≥ 0

х - 3 = 7  

х = 10