Recent content by nirajnishad

Homework Statement if roots of the equation ax^2+bx+c=0 be the form of p/(p+1) and (p-1)/p,the the value of (a+b+c)^2 is? Homework Equations The Attempt at a Solution

please anyone can give me some hint to solve this question?

Homework Statement The Acceleration of a particle increases linearly as bt with time.If the particle starts from U as initial velocity then the distance traveled in t seconds will be? Homework Equations The Attempt at a Solution

Homework Statement X={n/n belongs to N,X>=4} B={x belongs N/ x<5} Homework Equations then, A intersection B=________

Homework Statement X={4^n-3n-1/ n belongs to N} Y={9(n-1)/ n belongs to N } Homework Equations then, XUY is equals to X or Y or N or None of these

Homework Statement X={8^n-7n-1/n belongs to N} Y={49(x-1)/x belongs to N} Homework Equations Then, x is subset of y ] or y is subset of x or x=y,none of these

i tried but after soving the equations, value of d is coming in fraction.and the common difference cannot be a fraction number

Homework Statement sum of first 11 terms of Ap is 17 and sum of first 17 terms is 11 find the sum of first 28 terms?Homework Equations Sum=n/2[2a+(n-1)d]The Attempt at a Solution i tried solving it by using obove formula but i am not able to do so as the value of d is coming in fraction

Homework Statement A ball is dropped from a balloon going up at a speed of 7 m/s. If the balloon was at a height 60 m at the time of dropping the ball, how long will the ball take in reaching the ground ? Homework Equations u = –7 m/s, s = 60 m, a = g = 10 m/s^2 The Attempt at a...

it will be acceleration because as the time will pass the speed increases or decreases as it is a slope n as there is only 1 slope so average acceleration? i don't think so... i'll go for acceleration

Homework Statement A stone is droped from a balloon going up with a uniform velocity of 5m/s.if the baloon was at 50m high when the stone was dropped, find its height when the stone hits the ground? find the time for X(distance)=-50m, u(initial velocity)=5m/s a(acceleration)=-10m/s*s...

Homework Statement Row-1...a 1 1 Row-2...1 b 1 Row-3...1 1 c if the value of the determinant is positive the what is abc? Homework Equations ans is abc>-8 The Attempt at a Solution I am not able to follow the method shown in R D sharma Book. Is there any other method to...

i have tried adding all rows and colums. after doing it ,i am unable to find any common factor in any row or coloumn

Homework Statement I have a determinant to solve. Fistrow is -2a, a + b, a+c Second row is b + a, -2b, b + c Third row is c+a, c+b, -2c Prove that the determinant is equal to 4 (b +c) (c +a) (a + b) Homework Equations Not applicable. The Attempt at a Solution I have...

I'm sorry for the misleading title of the thread. It should be finding the number of moles!