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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
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2.
If,
-π/2 < Ө < π/2
Sinhx= tgӨ
Then,
Coshx=?
1- cos Ө
2- csc Ө
3- sec Ө
4- sin Ө
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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}
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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
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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…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!
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