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Find the domain and range of the graphs: y=2^x y=x^2-4 y=x^2+4x+3 y=sqrt(x-2) y=sqrt(4-x^2) y=|x+3|-2 ...?
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Find the domain and range of the graphs: y=2^x y=x^2-4 y=x^2+4x+3 y=sqrt(x-2) y=sqrt(4-x^2) y=|x+3|-2 ...?
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Apr 26, 2017
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Find the domain and range of the graphs:
y=2^x
y=x^2-4
y=x^2+4x+3
y=sqrt(x-2)
y=sqrt(4-x^2)
y=|x+3|-2 ...?
Mathematics
high-school
Xkeeper
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y=2^x
Domain: x∈R
Range: y∈(0,+∞)
y=x
²
-4
Domain: x∈R
Range:
y'=(x²-4)'=2x ⇒ x=0,y(0)=0²-4=-4
y∈(-4,+∞)
y=x
²
+4x+3
Domain: x∈R
Range:
y'=(x²+4x+3)'=2x+4 ⇒ x=-2,y(-2)=(-2)²+4(-2)+3=4-8+3=-1
y∈(-1,+∞)
Domain:
x-2≥0⇒x≥2
x∈[2,+∞)
Range: y∈[0,+∞)
Domain:
4-x²≥0⇒x²≤4⇒-2≤x≤2
x∈[-2,+2]
Range: x²≤4⇒y∈[0,2]
y=|x+3|-2
Domain: x∈R
Range: |x+3|≥0⇒y∈[-2,+∞)
Fhtagn
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May 2, 2017
by
Fhtagn
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