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#101 Re: Help Me ! » conditions required » 2014-06-11 21:14:46

thanks for the clear explaination.
smile

#102 Re: Help Me ! » conditions required » 2014-06-10 20:35:23

anonimnystefy wrote:

For a quadratic to always be positive you need:


and

I wanted this.
thanks smile

Can you explain more on why is it so.

#103 Help Me ! » conditions required » 2014-06-09 22:36:40

niharika_kumar
Replies: 17

What are the conditions required for a quadratic equation to be positive?

#106 Re: Science HQ » can acceleration be found? » 2014-06-03 02:11:11

I found V as 15m/s.
T1/T2 is 1.
but whenever I am trying to find acceleration, it is getting cancelled out.

#107 Science HQ » can acceleration be found? » 2014-05-31 05:34:03

niharika_kumar
Replies: 4

A particle is travelling in a straight line with constant acceleration.It passes through 3 different points P,Q and R, such that 2PQ=QR.The velocity of the particle at P is 5m/s and that at R is 25m/s.


the question had asked to find the ratio of time required to travel from P to Q and from Q to R.
I found it to be 1:1.

But I wonder if we can also find the acceleration, since it is constant(I may be wrong).I tried but couldn't succeed.
So my question is,
Can we find the acceleration of the particle in this case?

#108 Re: Help Me ! » integration » 2014-05-31 05:24:25

thanks bob, it really helped.:)

Calculus is looking interesting to me.It's fun.

#111 Re: Help Me ! » integration » 2014-05-30 05:06:10

can you explain a little more please.
I have just started studying and doing integration 2 days before, so am just a novice right now.

#115 Re: Help Me ! » integration » 2014-05-29 15:21:01

And what about this question:-

#118 Help Me ! » integration » 2014-05-29 04:46:09

niharika_kumar
Replies: 30

Q.

This is what I did and could not proceed further:-

first I multiplied numerator and denominator with 2
and got

assuming (3x^2+2x+1)=t and differentiating it,

I got

now I want to know what I can do after this.

#121 Re: Science HQ » volume content » 2014-05-27 16:14:24

good.
my school hasn't started yet.

#124 Re: Science HQ » volume content » 2014-05-27 15:47:36

thanks agnishom.
I got the answer. smile

how is your school going?

#125 Science HQ » volume content » 2014-05-26 16:14:43

niharika_kumar
Replies: 10

Q.How many molecules of

are contained in 1 L of air if the volume content of
is 0.03% at NTP?



p.s. What is the meaning of volume content of

?

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