Wyznaczyć dziedzinę funkcji:
Help!!!
f(x) = V(1-5/x)
x =/= 0
1-5/x >= 0
1-5/x = 0
x-5 = 0
x = 5
V(1-5/x) >= 0 I^2
1-5/x >= 0 I*x
x-5 >= 0
x >= 5
V(1-5/x) <= 0 I^2
1-5/x <= 0 I*x
x-5 <= 0
x <= 5
Df: (-oo; -5 > u (0: +oo)
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f(x) = V(1-5/x)
x =/= 0
1-5/x >= 0
1-5/x = 0
x-5 = 0
x = 5
V(1-5/x) >= 0 I^2
1-5/x >= 0 I*x
x-5 >= 0
x >= 5
V(1-5/x) <= 0 I^2
1-5/x <= 0 I*x
x-5 <= 0
x <= 5
Df: (-oo; -5 > u (0: +oo)