Mathematics
Senior High
分母が0になっちゃいけないのはわかるのですが、なぜx-5≠0とか√x+5≠0とかを解くと最終的にxの範囲がわかるのか教えてほしいです
4) Find the domain of f
1
(x-5)x+5
(-a -5)u(-5,5)u(5, 8)
a.
b.[-5, 5)U(5, co)
d.(-5,5)u(5, co)
e.
Restriction:x-5+0
Reason: x+5
Restriction:Vx+5+0
x+5+0
Xチ-5
Re striction:Vx+520
(V+5)20°
x+520
x>-5
Domain: (-5,5)u(5, +0)
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