cos(x-y)-2sinx + 2siny = 3 , if
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(-1/3)^3 =
-1/3 * -1/3 * -1/3 =
-1/27
(-1/3) ³ = - 1/27
a=-1/3
3a=-1
000
a = -1/3
a^3 = (-1/3)^3 (same as)
a^3 = (-1/3) x (-1/3) x (-1/3)
a^3 = (1/9) x (-1/3)
a^3 = -1/27
000
sepia
Lv 7
10 hours ago
If a = -1/3 then a^3 = -1/27
.......-1
a = ----- ⇒
........3
...........-1
a³ = (-------)³ ⇒
............3
.........(-1)³
a³ = -------- ⇒
...........3³
.........-1
a³ = ------.........
(-1/3)³ = (-1/3)(-1/3)(-1/3) = -1/27
010
Brian
Lv 6
11 hours ago
(-1/3)(3)
= -1 ,
000
Jim Moor
Lv 7
11 hours ago
I take that to be
2) If a = -1/3 then a³ = ??
a^3 = a*a*a = (-1/3)*(-1/3)*(-1/3) = -1/27
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