Best csir net mathematics books of infostudy by MIM academy

 1. Modern algebra:modern algebra by dr AP singh of MIM academy Chandigarh

2linear algebra: linear algebra by dr. AP singh of MIM academy Chandigarh

3. Real analysis:- real analysis book by dr. AP singh of MIM academy Chandigarh 

Best books for csir net mathematics 2020

Everyone want to crack the csir net.but the good books and right strategy is very helpful to achieve this aim.There are many books but todays i will help u to find the best books.with the help of internet i find the best books for csir net mathematics which as follows:

 1. Numerical methods  :- 

Numerical Methods: Problems and Solutions by M K jain,S R K Iyengar and R K jain

This is the best book for self study and u can buy it on amazon by click on link

    

2.  Modern algebra books :- Basic Abstract Algebra by P. B. Bhattacharya S. K. Jain S. R. Nagpaul(1994-11-25)

3. Real analysis books   :- mathematical analysis by sc malik and savita arora is the best book for csir net mathematics           

4. Linear algebra books:-linear algebra by schaum outlines is the best book for preparation of csir net mathematics

5 complex analysis:-  Complex   Variable (Schaum's Outlines) |Revised 2nd Edition is one of best book for csir net mathematics

6. Modern algebra:-Contemporary Abstract Algebra by joseph A gallian

7.ordinary and partial differential equations:- by MD Rai Singhania

How to find the distance between star and earth:- mathmasters.in

There are 2 method of measure the distance  in the world.

1. Direct method

2. Indirect method

1. :-direct method-  there is aa direct measurement by a specific scale.it is a finite distance.it can be measure easily.

2. Indirect method- in this method the Pythagoras and parallax method is used to measure.

             Stellar parallax method

              (Parallax method)

Astronomers estimate the distance of star in space by using a method called stellar parallax, or trigonometric parallax. Simply put, they measure a star's apparent movement against the background of more distant stars as Earth revolves around the sun. 

              Parallax method

Definition:-  Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.

:Astronomers estimate the distance of nearby objects in space by using a method called stellar parallax, or trigonometric parallax. 

Click here for full pdf form of how to find the distance between star and earth

Q  》how can find de distance                       between earth and stars? Or click here

ans 》Parallex method is used to measure distance between the earth and star. 

      Distance from sun to earth=1AU(austronic unit)

              1AU=1.5×(10)¹¹m 

               1AU=3×(10)¹¹m

                Angle (L)=arc/radius

                  Let radius=d

                     d=arc/angle

Let angle Q1 and Q2

              Total angle=Q1+Q2

                  d=2AU/(Q1+Q2) in radian

     d=3x(10)¹¹/(Q1+Q2)×1/60×1/60×π/180

              Let Q1=10sec,Q2=20sec

then        d=144×(10)14=14.4×(10)¹⁵

            d=2 light year(approx.)..answer

                                      (°:9.4×(10)¹⁵=1ligh year)

remember:60sec=1min,60min=1°,180°=pie 

remember:1mm=1/10 vernier clipers,1vc=screw gause