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0 
Questions Answered

mehakali:
Group Title
http://prntscr.com/4fy7j8/edit
please help me ..it is the 1st time i open the screen shot
 updated one month ago
 16 replies
 1 Medal
Mathematics

hartnn:
Group Title
If cos(x+iy) cos(u+iv)=1,where x,y,u,v are real then show that tanh^2y cosh^2v=sin^2u
 updated one month ago
 45 replies
 5 Medals
Mathematics

thomas5267:
Group Title
Proof the following:
\[
\sum_{r=1}^{n}\sin\left(\frac{2\pi r}{n}\right)=0 \\…
 updated one month ago
 11 replies
 2 Medals
Mathematics

oleg3321:
Group Title
can someone help me with algebra1 please
 updated one month ago
 29 replies
 1 Medal
Mathematics

oleg3321:
Group Title
3x  3 + 2 = 14
 updated 2 months ago
 7 replies
 No Medals Yet
Mathematics

experimentX:
Group Title
Secondary Level & High School Level Maths ebook.
does anyone know (possibly free) ebook on High School Level and Secondary Level that conta…
 updated 2 months ago
 5 replies
 1 Medal
Mathematics

ganeshie8:
Group Title
easy yet interesting geometry problem
 updated 2 months ago
 105 replies
 8 Medals
Mathematics

PFEH.1999:
Group Title
again a combinatorics problem :P :D
 updated 2 months ago
 48 replies
 9 Medals
Mathematics

experimentX:
Group Title
Hello @seoweb79 ... here goes your question.
 updated 2 months ago
 3 replies
 1 Medal
Mathematics

Twilliams250:
Group Title
the perpendicular bisectors of a triangle or segements that intersect the sides at __________ angles and divide each other of them into two…
 updated 2 months ago
 5 replies
 No Medals Yet
Mathematics

hang254:
Group Title
Express the complex number in trigonometric form.
5i
 updated 2 months ago
 9 replies
 2 Medals
Mathematics

oleg3321:
Group Title
Choose the slopeintercept equation of the line that passes through the point shown and is perpendicular to the line shown.
 updated 2 months ago
 24 replies
 2 Medals
Mathematics

waterineyes:
Group Title
Find the force on a point charge of \(30 \; \mu C\) at \((0,0,5) \;m\) due to a \(4 \; m\) square in the \(z=0\) plane between \(x = \pm 2\…
 updated 2 months ago
 26 replies
 No Medals Yet
Mathematics

waterineyes:
Group Title
\(\textsf{A surface is bounded by}\) \(\color{red}{0 <\rho <2}\), \(\color{blue}{30^{\circ} < \phi < 30^{\circ} }\) \(\textsf{and}\) \(\col…
 updated 2 months ago
 80 replies
 1 Medal
Mathematics

malkassir:
Group Title
A sinusoidal electromagnetic wave having a magnetic field
of amplitude and awavelength of 432 nm is traveling in
the direction through emp…
 updated 2 months ago
 17 replies
 2 Medals
Mathematics

ajprincess:
Group Title
Pls help:)
 updated 2 months ago
 19 replies
 No Medals Yet
Mathematics

emcrazy14:
Group Title
In 4^x+3=8^x1, what is the value of x?
 updated 3 months ago
 14 replies
 3 Medals
Mathematics

mathslover:
Group Title
If a, b and c are positive real numbers such that a + b + c = 3 then prove that :
\(\sqrt{a^3 + 3b} + \sqrt{b^3+ 3c} +\sqrt{c^3 +3a} \ge…
 updated 3 months ago
 42 replies
 4 Medals
Mathematics

No.name:
Group Title
What will be the remainder when sum of squares of all prime numbers greater than 3 but less than 100 is divided than 6
 updated 3 months ago
 39 replies
 6 Medals
Mathematics

ikram002p:
Group Title
i just wanna someone to check my solution
…
 updated 3 months ago
 11 replies
 1 Medal
Mathematics

Somy:
Group Title
formula derivation!! i kinda confused T_T
 updated 3 months ago
 51 replies
 5 Medals
Mathematics

experimentX:
Group Title
Integrate:
\[ \int_0^{\pi/2} \frac{x}{\sin x}\mathrm{d}x\]
 updated 3 months ago
 18 replies
 3 Medals
Mathematics

mathslover:
Group Title
Solve for \(x\in R\) :
\[ e^{\tan x} + \sec x = \log ( \cot x )+ \csc x \]
 updated 3 months ago
 33 replies
 3 Medals
Mathematics

MathsPro:
Group Title
I have a quick question for you...
If i want to find the gradient of the following lines: Perpendicular line, normal line and tangent, wh…
 updated 3 months ago
 5 replies
 No Medals Yet
Mathematics

No.name:
Group Title
Is there a way to calculate a minimum value of the expression
 updated 3 months ago
 50 replies
 2 Medals
Mathematics

experimentX:
Group Title
Fundamental Theorem of Arithmetic::
```
Every positive integer can be
…
 updated 4 months ago
 36 replies
 6 Medals
Mathematics

rubcksy:
Group Title
find the volume below the surface z=x^2+y^2 above z=0 and inside the cylinder x^2+y^2=2y
(ANSWER=3π/2)
 updated 4 months ago
 1 reply
 No Medals Yet
Mathematics

BrighterDays:
Group Title
Trying to figure out if I did this correctly. If someone could look at my work it would be appreciated! :)
Indefinite integral of dx/x^…
 updated 4 months ago
 10 replies
 3 Medals
Mathematics

RolyPoly:
Group Title
Let A and B be square matrices of the same size. If A and B are both ______, so is AB.
1) symmetric
2) invertible
…
 updated 4 months ago
 31 replies
 1 Medal
Mathematics

RolyPoly:
Group Title
Let A be a 4x7 matrix with rank 4. Which of the following(s) is/are true?
1) the rows of A are linearly independent
2) the columns of A mu…
 updated 4 months ago
 12 replies
 1 Medal
Mathematics
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