Mathematics: Post your doubts here!

[hamza.k143]

hamza.k143
Are you having any source or any book which contains the most difficult questions of complex numbers ???

If u have any quries u can ask me

 

[Hassan Ali Abid]

If u have any quries u can ask me

I dont have any quires....i only need some difficult questions just like the questions of mayjune 13 ...can u help me with that ?

 

[hamza.k143]

No swry

 

[Namehere]

It cant be 90 -angle it would be 90 +angle because total aum ina triangle is 180 and if u subtract the angle it couldnt be 90 -angle

in the question it says: given that cosx = p, find tan(90 − x) in terms of p.

 

[Namehere]

Suchal Riaz Try this
second part

View attachment 39173

What year whas that paper from?

 

[Suchal Riaz]

See there is no rule i just extended the line AB for my convenince to make it a triangle the original picture which i s3nd u i extendwd the line till center of the circle and named it D then if u notice a triangle was forming from which we could take out tje whole length AD and minus the radius of the inner circle to get shortest distance which is AB if any one doesnt get it just ask on skype or viber or something cux explaining it on comments is difficult

@suchal.riaz on skype. Call me when i am online

 

[Phoenix Blood]

How do we get ff(x) inverse?

 

[Phoenix Blood]

How to go about, step-by-step?

 

[Suchal Riaz]

How do we get ff(x) inverse?

 

[Suchal Riaz]

How to go about, step-by-step?

 

[sitooon]

What year whas that paper from?

mj 2013

 

[Phoenix Blood]

View attachment 39192

But the answer is 5...

 

[Phoenix Blood]

View attachment 39193

Thank you!!

 

[Phoenix Blood]

How do we do?

 

[Dudu]

How do we do?

A(-1,1)
B(8,7)

As you should know:
AC means c-a
AB means b-a

lets say coordinates of C is (x,y)

So AC = 2AB means: c-a = 2(b-a) ... so putting that together:

x - -1 = 2 ( 8 - - 1)
y - 1 = 2 (7 - 1)

So..
X + 1 = 2(9)
Y-1 = 2(6)

x = 17
y = 13

 

[Suchal Riaz]

Thank you!!

you said ff inverse which means inverse of (ff)
thats when happens when a function i multiplied with it's inverse.
it can't be 5. although ff-1(5) is 5.

 

[periyasamy]

Hi guys,have a question here.
Can anyone help me withthe sketch of this question.
Thank u...

 

[asd]

Umm GUYS?
Ill post my question again.

Four families go to a theme park together. Mr and Mrs Lin take their 2 children. Mr O'Connor take his 2 children. Mr and Mrs Ahmed take their 3 children. Mrs Burton take her son. The 14 people all have to go through a turnstile one a a time to enter the theme park.
In how many different orders can the 8 children and 6 adults go through the turnstile if no two adults go consecutively?
Ans is 2438553600 (8! x 9 x 8 x 7 x 6 x 5 x 4)
How and Why?

 

[Namehere]

Hi guys,have a question here.
Can anyone help me withthe sketch of this question.
Thank u...

Here you go:

 

[Heyyy]

Suchal Riaz Try this
second part

View attachment 39173

This question ain't as hard as it appears to be.
Pretty easy.
You just have to expand and substitute the values