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Counterexample problem.. jus want to know if its right. Thanks!
 one year ago
 one year ago
Counterexample problem.. jus want to know if its right. Thanks!
 one year ago
 one year ago

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TuringTestBest ResponseYou've already chosen the best response.1
what would happen if you plugged in x=1 ? you get\[x^2\ge1\implies x\ge1\]\[1^2\ge1\implies1\ge1\]where is the falsehood here?
 one year ago

myininayaBest ResponseYou've already chosen the best response.1
I agree with @TuringTest 1 does equal 1.
 one year ago

LilVeroDez13Best ResponseYou've already chosen the best response.0
ohh yeah.. it wouldnt b false.
 one year ago

EmahBest ResponseYou've already chosen the best response.0
but its saying OR equal to
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
and it is equal, so it's true
 one year ago

LilVeroDez13Best ResponseYou've already chosen the best response.0
@Emah yeahh thats true.. i dont see another answer that works
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
try each one individually
 one year ago

EmahBest ResponseYou've already chosen the best response.0
oh oops i sdidnt see the part that said couterexample:( sorry
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
what do you get when you plug in x=2\[x^2\ge1\]\[x\ge1\]are both still true?
 one year ago

LilVeroDez13Best ResponseYou've already chosen the best response.0
i get that its false
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
which part is false?
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
\[2^2\ge1\]is not true you say?
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
we need to find an example where the first part is true, and the second part is false to disprove the statement
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
\[2^2=4\]and four is greater than one, so \[x^2\ge1\]is true for x=2
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
what about the other part, is\[2\ge1\]?
 one year ago

LilVeroDez13Best ResponseYou've already chosen the best response.0
its true because 2 is greater tha 1
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
right, so both statements are true for x=2, so this is not a counterexample
 one year ago

TuringTestBest ResponseYou've already chosen the best response.1
what about for x=3 is\[x^2\ge1\]and is\[x\ge1\]?
 one year ago

LilVeroDez13Best ResponseYou've already chosen the best response.0
first one is 9 > 1 (true) second one is 3 > 1 (true too)
 one year ago

LilVeroDez13Best ResponseYou've already chosen the best response.0
so than its 1/4 (:
 one year ago
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