Graph (x^2)/16+(y^2)/4=1
Problem
Solution
Identify the type of conic section. The equation is in the standard form of a horizontal ellipse centered at the origin
(0,0) which is(x^2)/(a^2)+(y^2)/(b^2)=1 Determine the semi-major axis
a and semi-minor axisb Since16>4 we havea^2=16 andb^2=4 Calculate the lengths of the axes. Taking the square roots, we find
a=4 andb=2 Locate the vertices and co-vertices. The vertices are at
(±a,0) which are(4,0) and(−4,0) The co-vertices are at(0,±b) which are(0,2) and(0,−2) Find the foci using the relationship
c^2=a^2−b^2 Herec^2=16−4=12 soc=√(,12)=2√(,3) The foci are at(±2√(,3),0) Sketch the graph by plotting the center
(0,0) the vertices, and the co-vertices, then drawing a smooth curve to connect them into an oval shape.
Final Answer
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