Questions Answered

fr3der1co:
Group Title
Why the definition of limit is necessary to Calculus?
 updated 7 months ago
 13 replies
 1 Medal

rosy:
Group Title
why set of irrational nos are not dense??? while we consider this def of dense set
a set A is said to be dense in R if there is a point of…
 updated one year ago
 25 replies
 No Medals Yet

user917:
Group Title
How can I prove that this set is bounded above ?
E(x)= { (1+(x/n))^n } ?
 updated one year ago
 19 replies
 2 Medals

AwakeReality:
Group Title
AwakeReality
Suppose the sum of three consecutive even integers is given. How can you find the three numbers?
…
 updated one year ago
 3 replies
 No Medals Yet

hanashin13:
Group Title
is the limit of 3sqrt(x) 1 / sqrt(x) 1 as x approaches 1 equal to 3/2 ?
 updated one year ago
 45 replies
 1 Medal

bndbachhu:
Group Title
without derivative find the maximum and minimum values of 3sinx+4cosx
 updated one year ago
 3 replies
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Stargazer4:
Group Title
123
 updated one year ago
 5 replies
 2 Medals

stats90:
Group Title
Let \[{X _{n} : n \ge1}\] be a sequence of positive independednt random variables with \[E(X _{n})=c \in(0,1)\] for each n. Let Yn=X1X2...Xn…
 updated one year ago
 4 replies
 1 Medal

elaandre30:
Group Title
how many ways can you stack 77 books into equal piles?
 updated one year ago
 1 reply
 No Medals Yet

succubusismydogsname:
Group Title
Prove A(AB)=B(BA)
 updated one year ago
 9 replies
 1 Medal

Xpod78:
Group Title
What is a polyhedron whose faces are regular pentagons?
 updated one year ago
 1 reply
 No Medals Yet

ErinWeeks:
Group Title
Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notat…
 updated one year ago
 13 replies
 1 Medal

meganemma1995:
Group Title
Which of the following is the conjugate of 10 − 3i?
10 + 3i
…
 updated one year ago
 2 replies
 2 Medals

DavidUsa:
Group Title
What is a point mass?
 updated one year ago
 2 replies
 1 Medal

kdekle:
Group Title
Give an example of group elements a and b with the property that a^1ba does not equal a.
 updated one year ago
 2 replies
 1 Medal

jasmineirven:
Group Title
domain and range for g(x)=10^x
 updated one year ago
 3 replies
 1 Medal

tryder:
Group Title
My math teacher told me to answer and explain the answer for: 0/0=
 updated one year ago
 12 replies
 1 Medal

TheDoctorRules:
Group Title
What is the limit for x>infinity
(r+sinr) / (2r+75sinr)
 updated one year ago
 9 replies
 No Medals Yet

stupidinmath:
Group Title
WRITE A TWOCOLUMN PROOF. .
Given:
l3  l4
…
 updated one year ago
 5 replies
 1 Medal

bless:
Group Title
the equation y=ax^2+bx+c is a quadratic function for all real numbers a, b and c. True or False?
 updated one year ago
 1 reply
 1 Medal

AkashdeepDeb:
Group Title
HELP NEEDED:
If X = {8^n  7n  1n ∈ N} and Y = {49(n1)n ∈ N},
then prove that X ⊆ Y.…
 updated 11 months ago
 24 replies
 1 Medal

svengali:
Group Title
does the number 1 satisfy this: 1(modulo 4)
 updated one year ago
 3 replies
 No Medals Yet

revelationxd:
Group Title
True or False:
All even functions are continuous everywhere.
…
 updated one year ago
 13 replies
 2 Medals

kdekle:
Group Title
Suppose a and b are integers that divide the integer c. If a and b are relatively prime, show that ab divides c. Show, by example, that if a…
 updated one year ago
 20 replies
 4 Medals

orple8:
Group Title
Please help!!
 updated one year ago
 37 replies
 1 Medal

orple8:
Group Title
How many 20digit numbers are such that the sum of their digits is even?
 updated one year ago
 22 replies
 4 Medals

orple8:
Group Title
Ok. Another question.
 updated one year ago
 32 replies
 2 Medals

orple8:
Group Title
Okay. Here goes another one.
 updated one year ago
 6 replies
 No Medals Yet

orple8:
Group Title
So here's the other problem I promised you.
 updated one year ago
 14 replies
 2 Medals

orple8:
Group Title
yup. another question. help please?
 updated one year ago
 21 replies
 4 Medals
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