f(x)= (6+7x)/(2-x)(1+x^2)= A/(2-x) + Bx+C/(1+x^2)
Cross Multiply: 6+7x = A(1+x^2) + Bx+C(2-x)
Let x=2: 6+7(2) = A(1+4) A = 4
Coefficient of x^2: Ax^2 - Bx^2= 0x^2
A=B , B=4
Coefficient of x: Bx - Cx = 7x
4x - Cx = 7x
-Cx = 3x
C= -3
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f(x)= (6+7x)/(2-x)(1+x^2)= A/(2-x) + Bx+C/(1+x^2)
its simple cuz u need to get the derivative first then put it less than 0If f(x)= (36x^2) -(2x^4)
Find the interval for which f(x) is a decreasing function.
^Can anyone please solve it, along with explanation.
dy/dx=72x-8x^3If f(x)= (36x^2) -(2x^4)
Find the interval for which f(x) is a decreasing function.
^Can anyone please solve it, along with explanation.
How did you got that Bx+C?f(x)= (6+7x)/(2-x)(1+x^2)= A/(2-x) + Bx+C/(1+x^2)
Cross Multiply: 6+7x = A(1+x^2) + Bx+C(2-x)
Let x=2: 6+7(2) = A(1+4) A = 4
Coefficient of x^2: Ax^2 - Bx^2= 0x^2
A=B , B=4
Coefficient of x: Bx - Cx = 7x
4x - Cx = 7x
-Cx = 3x
C= -3
Its the formula that my teac gave. You can alternatively break it into A/2-x + B/1+x + C/1+x^2 and solve it but its kind of complicated and takes more effort, so feel free to use this formula. The Bx+C is only for quadratic factors, like here you have 1 term that's x^2.How did you got that Bx+C?
cool Hassan <-- Ask this guyI need topic wise past papers for Pure 3 and Statistics 1.
I kept looking everywhere but I couldnt find anything.
I hope someone could help!!
7a.Can anyone please help me out with this question?
First, find the no. of ways in which none of them is included (i.e. neither the woman who refuses, nor the man is included)Hello friends can anyone help me to understand no. ( i i i ) in this particular question. I am facing difficulty in understanding what happens when someone refuses. This question is from S1 Permutation and combination
A committee of 5 people is to be chosen from 6 men and 4 women. In how many ways can this be done
(i) if there must be 3 men and 2 women on the committee,
( i i ) if there must be more men than women on the committee,
( i i i ) if there must be 3 men and 2 women, and one particular woman refuses to be on the committee
with one particular man?
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