OK, this week my life was torn apart by a math equation for my applied calculus homework! I am always a big fan for numbers and equations, but this time, the math equation had tortured me for 3 hours until 2 am in the morning and I still didn’t get an answer after even asking all the people in liberary!!
the whole math equation thing is like this: on Thursday night, after my Karate class, I went back to my room and felt so exhausting, so I decided to take a nap. During my nap, one friend called me for math homework help. since I have already finished my math homework, so I thougt it would be easy for me to help her with the math homework. so I went to the liberary, to my surprise, there were five of my classmates there waiting for my help. I have no problem helping them until the last supplemental problem. I suddenly found that I had made a mistake there, so I told them to wait for me to correct the mistake. after correcting the mistake I got an equation 5x*sin(5x)=cos(5x) and I need to solve the x in order to go the next step. I have stucked in this equation for at least 3 hours. at last, I decied to give up and turned to others for help.
It was 12:30 am at that time, I walked around the whole liberary and middleground and asked anyone if they had calculus before. fortunately, I found one guy in Calculus three class, but after he had tried every method he came up in mind for an hour, he gave up as well. it was 1:30 am at that time, and I had used mathamatica, calculator , graph and my hand to solve the problem until then.
my friend called all the people she thought who had calculus before, and woke up those who even had already gone to sleep to help me solve the equation. the result was disappointing, no one could solve it!
the next day, I went to my math class, everyone was complaining the equation. they asked the professor to solve the equation, but it turned out that the professor was not able to solve the equation as well. the professor’s comment on the equation was ” it is obivious a challenging problem, even if you have learned all the methods later, you still are not able to solve it.” ” why do you give us such a difficult equation if you know we are not able to solve it, and we asked the whole liberary and all the friends for help last night until 2 am!” my friend who called me for help complained loudly to the professor. the professor replied:” can any of them solve the equation? ” no.” ” then, it proved that the equation is challenging and even the whole liberary and all your friends can’t solve it.” our professor answered with a smile. ” what? ” this is the answer the professor gave for the equation that i have struggled for the whole night?!! I felt so ridiculus and so mad at that moment!!
my life was totally ruined by a math equation! seriously !!
x = 3.78048199138
Sign reversal.