kc

elaborate pls

here is my c SIMPLE file

#include <stdio.h>

int main()

{

printf("YEAGDFS");

printf("YEAGDFS\n");

printf("YEAGDFS\n");

return 0;

}

.....

my question is simple

i used "gcc -o app filetest.c"

and then " ./app.exe"

but then there is no output?

is there something wrong with the installation of cygwin theres no ouput for all my c files

thnx

An instructor gives an exam with fourteen questions. Students

are allowed to choose any ten to answer.

a. How many different choices of ten questions are there?

b. Suppose six questions require proof and eight do not.

(i) How many groups of ten questions contain four that

require proof and six that do not?

(ii) How many groups of ten questions contain at least

one that requires proof?

(iii) How many groups of ten questions contain at most

three that require proof?

answers are

a. 1001, b. (i) 420, (ii) all 1001, (iii) 175, c. 506, d. 561

dont know how to get em??

If f : R → R and g: R → R are both onto, is f + g also

onto? Justify your answer.

i tried doing (a-b)(a+b) format but i got stuck...

Find the projection of vector AB onto the p = 2x - y +z where A = (1,1,1) is a point ON the plane and

B = (3,2,2) is a point OFF the plane, then use the projection to find the distance from B to the plane

Find the orthogonal projection of u = (5,6,7,2) on the solution space of homogeneous linear system

x1 + x2 + x3 = 0

2x2 + x3 + x4 = 0

help i dont get this do i add more solution space? if so am i allowed to do it?

given y_1' = y_1+ 3y_2

y_2' = 4y_1 + 5y_2

a)solve the system

b) find the solution that satisfies the condition y_1(0) = 2, and y_2 ' (0) = 1

okay so for a I got a diagonal of P = [-1 0

4 7]

is this even a diagonal i thought diagonals is not lower/upper triangle?

second for part b) it says y_2 ' (0) = 1 <--note the prime....this one i dont know what to do with this

btw its from linear algebra

given S = { (1, -2,1), (1,1,2), (3,1,2), (3,1,3)}

find the distance from p(3,2,1) to the line r=(1,1,1) +t(-1,2,3)

find equation of the plane paralell to the given vector and contains point

v1 = <1,2,1> v2 = <1,2,1> and point P(1,-1,1)

anyhow i got my answers as 0x+0y+0z = 0 is this right? :[

If ||v|| = 2 and ||w|| = 3 , what are the largest and smallest values possible for ? Give a geometric explanation of your results. yahoo

i thought that in order to be considered row echelon then

1) it has leading ones

2) leading 1 below the first leading 1 is to the right

but is this matrix in REF

[ 1 1 1 0

0 2 1 0

0 0 0 2 ]

??

so what i did for this is

x+y+z =1

2x+2y+z=5

3x+5y+2z= 10

---------------------------is this right ?

am(dim7)/b can anyone let me know how to do this im confused

Structure c? and allocation?

can any1 help me with this i need it using C language not c++ nor c#

Declare a structure for a student record consisting of five fields: the student 4-digit pin number, first name (dynamically allocated string), last name (max of 20 char), number of units completed (integer), and accumulated grade point average. Then write the main module which will input this information about you and output it to the screen.

my friend says its simple but i cant get started :[

i

Structure c? and allocation?

can any1 help me code this

Declare a structure for a student record consisting of five fields: the student 4-digit pin number, first name (dynamically allocated string), last name (max of 20 char), number of units completed (integer), and accumulated grade point average. Then write the main module which will input this information about you and output it to the screen.

my friend says its simple but i cant get started :[