Some Challenging Questions

last SG · 2008-10-05T22:40:04+00:00

Number of digits in n!:1</= n(n!) </= infinityO.OWhere </= refers to more than or equal to...?XD

Uncertain SG

(1) Prove to me, why 1 + 1 is not equal to 2 in general. Under what condition, does 1 +1 =2?

(2) Integrate tan x / (1+tanx) dx from pie/2 to 0.

Try this if u are really smart.

eagle SG

1 + 1 is not equal to 2 when you answer the question wrongly

1 + 1 equals to 2 when you answered the question correctly.

Uncertain SG

1 + 1 is not equal to 2 when you answer the question wrongly

1 + 1 equals to 2 when you answered the question correctly.

Lol dude, explain it using mathematical concepts. this is a question posed by my FM teacher during my first day in JC.

skythewood SG

just assume 3 sig fig

1 is understood to be 1.00 and has a range of 0.995 to 1.0049999....

hence, it is not taken for granted that 1 + 1 is equal to 2.00 in general

it will be equal to 2.00 if the result of the addition is from 1.995 to 2.004999999.....

your FM teacher is just being bo liao

skythewood SG

integrate tan[x]/(1 + tan[x]) dx = (x - Log[Cos[x] + Sin[x]])/2....

Uncertain SG

just assume 3 sig fig

1 is understood to be 1.00 and has a range of 0.995 to 1.0049999....

hence, it is not taken for granted that 1 + 1 is equal to 2.00 in general

it will be equal to 2.00 if the result of the addition is from 1.995 to 2.004999999.....

your FM teacher is just being bo liao

-.- think along complex number.

Uncertain SG

integrate tan[x]/(1 + tan[x]) dx = (x - Log[Cos[x] + Sin[x]])/2....

what is the answer then?

skythewood SG

-.- think along complex number.

suddenly, alot of new rules...

seems like you are setting your own rules to this question.

skythewood SG

what is the answer then?

sub in yourself

Uncertain SG

skythewood,

don't know how to do then shut up. Don't try to act smart here.

your first assumption about 3 s.f. is utter bullshit to begin with and u are setting your own rule (complex number is a hint to the answer). Second part only got to show ur integration skill is like shit.

xXBlack_RebelXx SG

Dude can you please leave the bickering outside the homework forums? Lets all be nice.

eagle SG

Lol dude, explain it using mathematical concepts. this is a question posed by my FM teacher during my first day in JC.

heh, cuz I saw a similar question in SgClubs, then the answer was the one I posted

hahahaha

Forget about maths, help me in Chemistry in ExamWorld!

secretliker SG

When 0.99999... is taken as a number that is equal to 1.

http://en.wikipedia.org/wiki/0.999...

Thus 1 + 1 = 0.99999... + 0.99999... = 1.99999...8

The sum of these 2 recurring decimals will eventually end at an imaginary 8.

Uncertain SG

heh, cuz I saw a similar question in SgClubs, then the answer was the one I posted

hahahaha

Forget about maths, help me in Chemistry in ExamWorld!

Sure sure :)

Uncertain SG

Dude can you please leave the bickering outside the homework forums? Lets all be nice.

Dude I promise u that i will be nice but i will disrespect anyone who show disrespect to me. Simple as that ya

Uncertain SG

When 0.99999... is taken as a number that is equal to 1.

http://en.wikipedia.org/wiki/0.999...

Thus 1 + 1 = 0.99999... + 0.99999... = 1.99999...8

The sum of these 2 recurring decimals will eventually end at an imaginary 8.

haha no la. More difficult and logical than this ;)

I will post the solution for part 1 tmr. Part 2 is really tough, i am not kidding.

skythewood SG

skythewood,

don't know how to do then shut up. Don't try to act smart here.

zzzzz.....

get lost lah....

generation90 SG

1 + 1 = window

well yeah i know it's wrong :p

Darkness_hacker99 SG

1 + 1 =/= 2

in business refers to a synergy.

One cow farm + one milk factory = give you milk.

if you add one more cheese factory, it gives you the ability to make cheese.. from the primary cow farm.

--> synergy.

wishboy SG

1 husband + 1 wife = 1 husband 1 wife 1 child