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Resolver 1

9.4K Views
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3 years ago
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7 Videos 68 Subscribers
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All Comments (6)

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2 years ago
Great video, overall good reasonment, but I must say that on line 2, you forgot the square on the right side. And explaning the domain of x could help to explain why we can divide by x on both side (x different to 0)
1 year ago
No, he didn't forget the square. He forgot to square it. Furthermore, the domain of the RHS is not just as you say. If we assume we are working over the real numbers, which appears to be the case, then it is clear that our interval on which the function is defined is (infinity,-3sqrt(2+sqrt(6))) U (0,infinity). Technically you said nothing wrong about the domain, but it is more specific than you indicated.
2 years ago
Gran video, se me bajó la pitolina y me entraron ganas de hacer matrices, un saludo!!!!
1 year ago
Note: For the two comments below, it was not allowing me to use proper notation. When I say the set B=a1,a2,...an, I mean that a1, a2,...,an are distinct elements of the set B. Furthermore when I say Rx, I mean the polynomial ring R adjoin x. (Here x is the indeterminate.)
2 years ago
great video 🙂
1 year ago
(2) if and only if g(x)=d, so long as d is not a pole of f, that is, a zero of g. By the fundamental theorem of algebra, we are guaranteed that g has at most two complex solutions, and as stated earlier, these solutions form the set A, a proper subset of R. Even more specifically, notice that the set A is also a proper subset of Q.
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