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if p+q+r=16, b+c=4 and x,y,z are the solution of linear equations



(x/r)+(y/r-b)+(z/r-c)=1 then x+y+z is

3 years ago


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If f(x-1) = x^2, find f(3). It’s suppossed to be 16, but I don’t understand why.
In the domai part its is given the value x-1 = 3 ….. so, choose, x = 4 and put in the function and get the value.. You ust assure for the value you are defining, it should be in valid...
Saurabh Kumar 6 months ago
Put x=4 and then this equation will give you f(3)=4 2 =16 ........................ ….................................... ....................................................
Naveen Kumar 6 months ago
Hi, this is very straightforward. Put x = 4 in the given eqaution, f(4-1) = 4 2 , f(3) = 16...
Shobhit Varshney 6 months ago
how to find coefficient of x^n in 1/(1-x)(1-2x)(1-3x) ans is ( 3^n+2-2^n+3+1)/2 sir pl explain the method
coefficient of x^n => Multiply the above and check x^n
Nishant Vora 8 months ago
in these kind of questions u can only multiply the coefficents , same kind of question came this year in iit advance paper 1,, integer type
abhidon3 7 months ago
thanhs to ans but i think its not easy to observe how will we explain to find coefficient by multiplication to a student sir
man 8 months ago
JMO question---
Hello Student Please fidn the soln n6 +3n5_5n4_15n3+4n2+12n+3 = = n5(n+3) –5n3(n+3)+4n(n+3) + 3 =(n+3)[n5 –5n3+4n] + 3 =n(n+3)[n4-5n2+4] + 3 =n(n+3)(n2-4)(n2-1) + 3...
Nishant Vora 7 months ago
We will prove that this expression is of the form 4k+3 and hence not a perfect square. is a multiple of 4. Hence we only need to prove that the following expression is a multiple of 4: So,...
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|z1=|z2|=|z3|=|1/z1+1/z2+1/z3|=1 then |z1+z2+z3|=?
Hello Student, Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
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