traid

C - language:



1. write a program to calculate ncr



2. write a program to exchange the values of two variables

using

pointers



3. write program to open one file input some numbers and find

smallest,largest, avg. and store them in another file.



4. write a structure node using linked list



5. write a program to reverse a string



co-ordinate geometry



1. find the perpendicular distance from a point P(a,b) to a

line lx+my+n=0;



2. y=x^3+2x^2+5x+2 find the slope of this eqn when x=12;

( Hint :find dy/dx and substitute x=12)



3. circle is x^2+y^2=a^2 . if the centre is shifted to (25,16)

what

is the eqn of new cirlce.



4. pt rotation P(x,y) about origin in anticlockwise direction

by an

angle theta. find new coordinates.