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49 kool

no qn 4 me....here mine goes

goiit or fiitjee

wer did u nick this

net force acting on the body is 0 (actually no force is acting)

therfore the body will follow newtons 1st law

pl. rate me if ur satisfied

cheers

hey its a lie....rajni never did those stuffs

even i hav the same doubt

u=nc_v

t alwayss

no reservationsss

thanks maan

i forgot elessar

thanks man

x^2 - 1>0

x^2 > 1

-1>x>1

also x + 3 not equal 0,1

x not equal to -3 ,-2

domain (-infin.,-3) u (-3,-2) u (-2,-1) u (1,infin.)

i think im rite .correct me if im wrong

cheers

rate me if im rite

happy bday and best of luck

any 1 come up with a new trick

People use numbers every day to benefit themselves. Statistics can be misinterpreted simply because of the way the information is given. In the following questions, you will see how some of the number tricks work and learn to explain them by using algebra.

Here is an example of a trick:

Choose a Number
Add 5
Double the result
Subtract 4
Divide the result by 2
Subtract the number you started with
The result is 3

Pick 4 different starting numbers and prove that the result will always be 3. Call these solutions Part A.

As we progress through our mathematical career we learn to use algebra more and do not accept a proof simply because it works for a bunch of random numbers.

Following is an algebraic proof of the above number trick. My original number is x:

Choose a number	x
Add five	x + 5
Double the result	2(x + 5) or 2x + 10
Subtract 4	2x + 6
Divide by 2	x + 3
Subtract the original number	3

Find a similar algebraic proof for or each of the following number tricks. You can use any variable you want to start with, but you must always finish with a number. You must first find the resulting number.

Question 1

Choose a number. Add 3. Multiply by 2. Add 4. Divide by 2. Subtract the number you started with. The result is ??

Question 2

Choose a number. Double it. Add 9. Add the number you started with. Divide by 3. Add 4. Subtract the number you started with. The result is ??

Question 3

Create a trick of your own. You must prove, using algebra, that your trick will always work.