Recent content by Sahil Kukreja

The volume you got was of the final solution = 277.78 mL and hence, the water to be added is = (277.78-50)mL = 227.78mL. There is another easy method which is called "Unitary Method" and you also don't have to remember any formulas for that :wink: There are ## 2*0.001 ## gms glucose in 1 mL...

Sorry, I did not know that version of lens equation; as in our country the lens equation version used is different.

That is not the lens eqn. The lens equation is :- 1/f = 1/v - 1/u Where v:- image distance with sign convention u:- object distance with sign convention just take reciprocal of whole eqn ## \frac {1}{\frac{1}{f}} = \frac {1}{\frac{1}{v} - \frac{1}{u}} ## ## f = \frac{1}{\frac{(u-v)}{uv}} ##...

i think your question is wrong it should be:- in all the terms it should be sqrt(x) , sqrt(y), sqrt(z) inside of arctan ; where x,y,z are a(a+b+c)/bc , b(a+b+c)/ac , c(a+b+c)/ab ; as i have seen a similar question in my textbook. if you consider it like this and take tan both sides and use...

Yes, that's what i was saying in post #16.

^Please Reply, its been more than one day. Thanks! :smile:

Your question is wrong. it should be :- x= 2 + 2^(1/3) + 2^(2/3) otherwise your calculations are wrong, you can just check.

The question is solvable without calculating square roots and cube roots.

I think there is a calculation mistake here, sorry if i am wrong.

Hint :- take '2' to the left side and then cube both sides.

Sorry, i didnt read the question carefully. You are correct.

I think my answer is correct

Hi, I want to self learn combinatorics .Its basics have been taught to me in high school, but my basics are not clear and problems go haywire. I have tried a lot, but i still fail in understanding it. How can i proceed further? Thanks.

I think it is correct, you can just verify that 1+i & 1-i are the roots of x^2-2x+2. and by opening the last line, it gives the required cubic. and in the second line, i think its correct too. Please Reply. Thanks.

According to me the answer is