= √(3( ⁴√( ³√3³*3 ) ) = √(3 (¹²√3⁴) ) = √(3 ³√3) = ⁶√ 3 ³ *3 = ⁶√3⁴ = ³√3
3cos²x = 4sinxcosx-sin²x
4sinxcosx-sin²x-3cos²x = 0
-
-
= 0
4tgx - tg²x - 3 = 0
tg²x - 4tgx + 3 = 0
Замена
tgx = a
a² - 4a + 3 = 0
D= 16 - 4*3 = 4
a₁ =
= 3
a₂ =
= 1
tgx = 3
x = arctg3 + πk, k∈z
tgx = 1
x =
+πk, k∈z
1 целая 59/72 * 1 целая 11/25
M^4+2m^3-m-2=m(m^3-1)+2(m^3-1)=(m^3-1)(m+2)