# Relations And Functions Free Doubts and Solutions

### CBSE - XI Science - Mathematics - Relations and Functions

## Plz answer 4th sum

**lovemaan5500**1st February 2019, 9:43 PM

### CBSE - XI Science - Mathematics - Relations and Functions

## Determije its domqin also.

**k.manju2007**18th August 2015, 10:21 PM

### CBSE - XI Science - Mathematics - Relations and Functions

## Can the graph of a rational function coincide with its slant asymptote?

**Varunasav**28th September 2014, 11:25 AM

### CBSE - XI Science - Mathematics - Relations and Functions

## There are two horizontal asymptotes in the graph of a signum function. So, there should practically be 2 values of 'y' for x=infinity. Please explain this.

**Varunasav**27th September 2014, 7:32 PM

### CBSE - XI Science - Mathematics - Relations and Functions

## How do I find the range of different types of functions without using graphs also explain the same for domain

**laxmikant mishra**16th July 2014, 3:14 PM

### CBSE - XI Science - Mathematics - Relations and Functions

##
In the above image can we say that y5 is the Co-domain ? Why or Why not ?

**Deepak Singh**13th June 2014, 7:33 PM

### CBSE - XI Science - Mathematics - Relations and Functions

**Sayoni Maiti**22nd May 2014, 10:18 PM

### CBSE - XI Science - Mathematics - Relations and Functions

## Thanks sir, one last thing, please find the range for the same question algebraically.

**Jyoti Chandra Azad**17th May 2014, 6:46 PM

### CBSE - XI Science - Mathematics - Relations and Functions

## If -5/6 does not come under domain of f(x), then we should not get value of f(-5/6) but we are getting the value of f(-5/6)= -6/11 as f(-5/6) = 2/(|3-|(-5/6)-1|-5(-5/6)|-9) by putting x=(-5/6) =2/(|3-|(-11/6)|+(25/6)|-9) =2/(|3-(11/6)+(25/6)|-9) [ since |-11/6|=11/6 ] =2/{|(18-11+25)/6|-9} =2/{|32/6|-9} =2/{(32-54)/6} =2/(-22/6) =(-6/11) similarly f(11/4) = 4/7 And if (-5/6) and (11/4) are not the domain of f(x). How can i get any value at that point. Please clear my doubt

**Jyoti Chandra Azad**16th May 2014, 7:45 PM

### CBSE - XI Science - Mathematics - Relations and Functions

## In First Case , we have x-1>=0, this means that we have to consider all the values greater than equal to 1, and therefore should we remove the value (-5/6) from the domain ? Similar is the case with the value (11/4) in the second case which is greater than 1. According to me the domain should be R-{-7/4,13/6}. Am a right here? Please explain

**Jyoti Chandra Azad**14th May 2014, 8:02 PM