In the xy-coordinate system, the point(x,y) lies on the circle with equation
X^2+y^2=1
a:x+y b:1.01
well, the answer key is D, which means the both quantities can't be dertimined for which one is greater. It's from Gre test sample, can anyone explain what that equation mean?
2007-04-19
16:53:22
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1 answers
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asked by
liangjizong22
1
in
Science & Mathematics
➔ Mathematics
this is a gre problem
the A and B listed on my questions are only a pair of comparisons, in fact, the answers choices are usually not listed as they are common senses among Gre takers, if you don't know about it, I will tell you the answer choices, A, a is greater, B. b is greater, C, they both are equal D, can't be determined.
2007-04-19
17:15:30 ·
update #1