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The body is the hero
Hello guys,
I was chatting earlier today and someone told me that science must be considered the hero of our time mainly when it comes to our immune system. Thenceforth, I decided to post exactly what I have learned from the past few days and I hop
Read more…Geometry (I)
Imagine that we have 2 parallel lines and there are 5 points on each line.
How many triangles can we make by them?
1- 100
2- 200
3- 150
4- 300
Read more…Let's study "Mathematics" with each other! (8)
Lim ([x]+[x^2]+…+[x^100])=? (Where x→ō )
- -50
- 0
- 50
- 100
Let's study "Mathematics" with each other! (6)
1.
If:
f(x)= x , for x≤1 & x^2 ,for x>1
Then,
What is the inverse of f(x)?
1- x , for x≤1 & √x ,for x>1
2- -x , for x≤1 & -√x ,for x>1
3- 1/x , for x≤1 & 1/x^2 ,for x>1
4- -1/x , for x≤
Read more…Let's study "Mathematics" with each other! (5)
If we have:
f(x)=√{1-√(x-1)}
Then,
Which one is the range of f(x)?
1- [0,1]
2- [0,3/2)
3- [1/2,1[
4- [1/2,3/2)
Read more…Let's study "Mathematics" with each other! (7)
1.
sin-1 x + cos-1 x=?
1- π/4
2- π
3- π/2
4- 2π
******* ******* ******* ******* *******
2.
If,
-π/2 < Ө < π/2
Sinhx= tgӨ
Then,
Coshx=?
1- cos Ө
2- csc Ө
3- sec Ө
4- sin Ө
******* ******* ***
Read more…Let's study "Mathematics" with each other! (2)
1-If we have:
[x] ≤ (x/2)
Then which one is right?
1- {x: x>1}
2- {x: x<1}
3- {x: -1<x<1}
4- {x: -2<x<0}
******* ******* ******* ******* *******
2-Which one is odd?
1- Ln {x+√(1+x2)}
2- e^sinx
3
Read more…Let's study "Mathematics" with each other!
Hi dear friends!
How are you?
Are you interested in "Math"?!
So…
Let's study it together!
Please answer these questions:
1- If we have:
1< (2|x|-1)/|x|+1 < 2
Then;
Which one is right?
1) x > 1/2
2) -2 < x < 2
3) x < -(1/3) or x > (1/3)
4
Read more…Let's study "Mathematics" with each other! (4)
1- If we have:
f(x)= x^2+2x
g(x)=x^3
Then, how many answers can (gof)(x)=(fog)(x) have?
1- 1
2- 2
3- 3
4- 6
******* ******* ******* ******* *******
2- If we have:
f(x)=2[x]+2[-x]
Then, what is
Read more…Let's study "Mathematics" with each other! (3)
If we have:
f(x)= Ln(x^9)
g(x)= x^(2/3)
h(x)= e^(x)
Then, what is f(g(h(x)))?
1- 6x
2- 9x
3- 10x
4- e^(9x)
Read more…Asteroid Towards Earth
Any idea or information about asteriods chances of hitting earth within a next decade.Sources : NASA Website
Read more…6s all around !
Hi you who is interested in mathematics ! I do love it ...So welcome to this session !Stop by to take a look at the lines below to see if you're a talented mathematician !
Stay away from aliens??
There has been an interesting debate about our quest for extraterrestrial life forms, since Stephen Hawking, a renowned theoretical physicist, said that if we encounter aliens, they could be more interested in exploiting our natural resources than sh
Read more…SLEEP STAGES...
Hi everyone ...here is some info about the stages we go through during a sleep period...hope you to enjoy it...some facts about sleeping... Complex changes take place in the brain during sleep. It is far from a simple reduction in body process activi
Read more…It's unbelivable
I took this photo in Sausalito,CA,USA.The man has done this great job in front of our eyes.I really impressed!
Read more…1o mens!!Very Important In Technology!!!
1-Sergey Brin and Larry
