Question about Texas Instruments TI-89 Calculator

# Prime y=x raised to the -1 find y prime

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You may simply apply the power rule for determining the first derivative. If y = a * x^b then y' = a * b * x^(b-1).
In your case, a = 1, b = -1 you get:
y = x^(-1) =>
y' = 1 * (-1) * x^(-1 - 1) = -x^(-2).

Posted on Mar 20, 2014

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Posted on Jan 02, 2017

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1 Answer

### Define a prime number

A prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself. Read on at the link.

http://whatis.techtarget.com/definition/prime-number

Apr 04, 2017 | Prime Computers & Internet

2 Answers

### Is 8 a prime number? And what are the factors for 20? And is 20 a prime number?

No it isn't as 1,2,4,8 can be used to divide it prime's are only dividable by 1 or itself only
20 is 1,2,4,5,10

Jan 23, 2017 | The Computers & Internet

1 Answer

### Why is it important that 1 is not a prime number

It used to be. The idea is that a prime decomposition must be unique. If you write 13=1*13, you can also write 13=1*1*1*....*1*13. If you allow 1 to be a prime number, there is no unicity of any prime factor decomposition. Any prime number would have a infinity number of prime decompositions.

Sep 28, 2014 | Computers & Internet

1 Answer

### What is a prime number ?

A prime number is any whole number larger than 1 that cannot be evenly divided by any whole number other than 1 and itself. For example, 5 is prime because it can only be divided by 1 and 5, while 4 is not prime because it can also be divided by 2.

See http://en.wikipedia.org/wiki/Prime_number

Sep 09, 2013 | Office Equipment & Supplies

1 Answer

### I dont know what all the prime numbers are

"A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself." - wikipedia
A list would be impossible without a limit. if you can't divide it by anything but 1 and the number itself(which would also mean that you were dividing by one), then it's prime.
4 is not prime, because it is divisible by 1, 2, and 4. 5 is prime, because it cannot be divided by anything except 1 and 5(itself).

Nov 08, 2012 | Computers & Internet

1 Answer

### Is 1 a prime number

No, 1 is not a prime number. The decomposition of a number into prime factors must be unique so 2=1x2 is prime but since 1 can be written as 1=1x1x1x1....x1 with an arbitrary number of factors this opens up a can of worms as far as unicity of the decomposition is concerned. Conclusion: 1 has been ruled out as a prime number.
I hope that this gives you an idea why 1 is no longer considered prime.

Jul 10, 2012 | Mathsoft StudyWorks! Middle School Deluxe...

1 Answer

### Whats prime numbers

Prime numbers are those numbers (greater than 1) that cannot be divided by any number except themselves and one.
The Greek Eratosthenes created a method to find out these prime numbers, although it only worked over a limited range:
1) Write out the numbers from 1 to 100 in ten rows of 10.

2) Cross off number 1, because all primes are greater than 1.
3) Number 2 is a prime, so we can keep it, but we need to cross off the multiples of 2 (i.e. even numbers).
4) Number 3 is also a prime, so again we keep it and cross off the multiples of 3.
5) The next number left is 5 (because four has been crossed off), so we keep it and cross of the multiples of this number.
6) The final number left in the first row is number 7, so cross off its multiples.
7) You have finished. All of the "surviving" numbers (coloured in white below) on your grid are prime numbers.

Oct 23, 2011 | MathRescue Word Problems Of Algebra Lite

1 Answer

### Mower starts after priming, then quits. new sparkplug, air filter etc. cleaned bowl still no luck. cleaned out orifices in bowl screw. nothing. Suggestions?

Evan though you cleaned the bowl, the float isn't "floating" correct in the bowl to raise the needle for gas to flow into the carb. The float and needle can be replaced. When you prime an engine the gas shoots straight to the carb. As when the engine is running the floating goes up and down to raise the needle for gas to flow.

Jul 07, 2010 | Yard Machines 11A54MC006 21Inch 139cc MTD...

1 Answer

### Need code

Try the Following Five Programs

1) Program for Prime Number Generation

#include <stdio.h>
main()
{
int n,i=1,j,c;
clrscr();
printf("Enter Number Of Terms
");
printf("Prime Numbers Are Follwing
");
scanf("%d",&n);
while(i<=n)
{
c=0;
for(j=1;j<=i;j++)
{
if(i%j==0)
c++;
}
if(c==2)
printf("%d ",i)
i++;
}
getch();
}
--------------------------------------------------------------------------------------------------------------------------------------------------

2)Program for finding the prime numbers

#include <stdio.h>
#include <conio.h>
void main()
{
int n,m,k,i,max;
char c;
clrscr();
repeat: max=0;
k=2;
n=1;
printf("You want prime numbers upto:- ");
scanf("%d",&max);
printf("

");
for (i=1;i<=max;i++)
{
again: m=(n/k)*k;
if (m!=n)
k=k+1;
else
goto try1;
if (k < n/2)
goto again;
else
printf("%d",n);
printf(" ");
try1: n=n+1;
k=2;
}
fflush(stdin);
printf ("

Do you want to continue?(y/n):- ");
scanf("%c",&c);
if (c=='y')
goto repeat;
getch();

}
---------------------------------------------------------------------------------------------------------------------------------------------------

3)
1. #include <stdio.h>
2. int main(void) {
3. int n,
4. lcv,
5. flag; /* flag initially is 1 and becomes 0 if we determine that n
6. is not a prime */
7. printf("Enter value of N > ");
8. scanf("%d", &n);
9. for (lcv=2, flag=1; lcv <= (n / 2); lcv++) {
10. if ((n % lcv) == 0) {
11. if (flag)
12. printf("The non-trivial factors of %d are: \n", n);
13. flag = 0;
14. printf("\t%d\n", lcv);
15. }
16. }
17. if (flag)
18. printf("%d is prime\n", n);
19. }
---------------------------------------------------------------------------------------------------------------------------------------------------

4)

#include<stdio.h>

#include<conio.h>

void main()

{

int n,i,c=0;

clrscr();

printf("enter the number:");

scanf("%d",&n);

for(i=1;i<=n;i++)

{

if(n%i==0)

{

c=c+1;

}

}

if(c==2)

printf("number is prime");

else

printf("number is not prime");

getch();

}
-------------------------------------------------------------------------

5)
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
clrscr();
printf("enter the number:");
scanf("%d",&a);
for(b=2;b<a/2;b++)
{
if(n%i==0)
{
printf("\n Its not a Prime number");
c=1;
break;
}
if(flag==0)
printf("\n Its a Prime Number");
getch();
}
}

Sep 02, 2008 | Computers & Internet

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