Question 1002804
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Plain text representation of "less than or equal" is "<="; everyone understands that to mean *[tex \Large \leq].  Similarly, ">=" means *[tex \Large \geq].


Jan:  *[tex \Large r(t)\ =\ 12t\ \forall\ t\ \in\ \mathbb{R}\ |\ 30\ \leq\ t\ \leq\ 40].  Hence *[tex \Large 360\ \leq\ r(t)\ \leq\ 480\ \forall\ t\ \in\ \mathbb{R}\ |\ 30\ \leq\ t\ \leq\ 40].


Rachel:  *[tex \Large r(t)\ =\ 11t\ \forall\ t\ \in\ \mathbb{R}\ |\ 20\ \leq\ t\ \leq\ 30].  Hence *[tex \Large 220\ \leq\ r(t)\ \leq\ 330\ \forall\ t\ \in\ \mathbb{R}\ |\ 20\ \leq\ t\ \leq\ 30].


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
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