Math 242

@math242uhm

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95 posts

Posts

Hi Krystin, I had a question. How would you solve for x in this equation? ln(sqrt(x) -3)=0

You would need to exponentiate both sides to get sqrt(x)-3=e^0=1. Then isolate the square root and square both sides.

Hey Kristin! Just letting you know you were an awesome TA, have a good summer!

Thanks! Have a good summer!(Also it's Krystin lol)

Niceme.me

Where can we view our grade on the final?

-Dr. Harron says this info isn't online anywhere

What room is the final located in?

Our normal room WAT 420

Hi Krystin!

Hi!

professor of math for mathy geniuses in a movie: heres a sigma heres an integral. heres some long equations.

professor of math for math majors irl: *badly draws a pair of pants on the board*

professor of math for math majors irl: alright yeah basically this. see you next week.

Calc makes me feel like there is no god

#Anonymous

dungeonmastersdiary

This comic is irrational

fyphysica

Beautiful proofs (#1) : Divergence of the harmonic series

The harmonic series are as follows:

And it has been known since as early as 1350 that this series diverges. Oresme’s proof to it is just so beautiful.

Now replace ever term in the bracket with the lowest term that is present in it. This will give a lower bound on S1.

Clearly the lower bound of S1 diverges and therefore S1 also diverges. But it interesting to note that of divergence is incredibly small: 10 billion terms in the series only adds up to around 23.6 !

twocubes

ways to end proofs

QED

which was what we wanted (abbreviated w⁵, or u¹⁰, or even v¹⁰)

■ (or □ for lemmas)

♥

So there.

The rest is obvious.

The solutions for Fall 2016 are on Dr. Harron’s website! Heads up: there's an error on the differential equation of Spring 2016

#announcements #solutions

What's the class average rn?

I don't have an accurate class average because I don't know all of the midterm grades

Reviews/Help

The Learning Emporium will be open from 9am-5pm during reading days and Monday/Tuesday of next week. It will be open until noon on Wednesday of next week. Review sessions that I know of are: Friday 5/5 12-2pm in Keller 303 Sunday 5/7 2:30-3:45pm in Bilger 335 Tuesday 5/9 12-2pm in Keller 303

#announcements