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same here how to solve for this!?????????????????????????????????anyone
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same here how to solve for this!?????????????????????????????????anyone
hey bro but why did u substitute f(-1) in the remainder part it is supposed to be in the original equation thats f(x) and hey also thats what we call remainder theorem right?Let f(x) = (x^2 - 1)Q(x) + ax + b
f(x) = (x-1)(x+1)Q(x) + ax + b
we know that (x+1) is a factor,
f(-1) = 0,
b-a = 0, this is equation 1,
(x-1) gives remainder of 4,
f(1) = 4,
a+b = 4 , this is equation 2,
solve simultaneous equation 1 and 2,
then you can find a and b.
hye b
hey bro but why did u substitute f(-1) in the remainder part it is supposed to be in the original equation thats f(x) and hey also thats what we call remainder theorem right?
Let f(x) = (x^2 - 1)Q(x) + ax + b
f(x) = (x-1)(x+1)Q(x) + ax + b
we know that (x+1) is a factor,
f(-1) = 0,
b-a = 0, this is equation 1,
(x-1) gives remainder of 4,
f(1) = 4,
a+b = 4 , this is equation 2,
solve simultaneous equation 1 and 2,
then you can find a and b.
cos^3 x
= (cos^2 x)(cos x)
= (1-sin^2 x)(cos x)
= cos x - (sin^2 x)(cos x)
after integration,
it become:
= -sin x - (1/3)(sin^3 x) + c
I started the same way - (I didn't know it was called substitution, i had been calling it by-parts)
Anyway, i'm afraid, both of you have got the wrong answers!
The correct answer, or the one at the back of the book is,
1/3sinx (3cos^2 x + 2sin^2 x)
It is not the wrong answer , just that you have got an answer in a different form, both forms are correct!I started the same way - (I didn't know it was called substitution, i had been calling it by-parts)
Anyway, i'm afraid, both of you have got the wrong answers!
The correct answer, or the one at the back of the book is,
1/3sinx (3cos^2 x + 2sin^2 x)
Nothing fishy, just my personal secretary!I sense something fishy!
Anyway,
Sorry i could only solve for question 1. See attached file.Hello frens could someone please help me with these
Quest. 1 Complex numbers
Given the complex number, Z= -√(2i) ,find the argument of Z.
ANS : arg(Z)= -π/2
Quest.2 Complex N0.
Given Z= cos π/6 +cos π/3 .Find argument of Z and modulus of Z.
ANS : arg(Z)= π/6 and mdulus of Z = 1
Thanks in advance.
Hello frens could someone please help me with these
Quest. 1 Complex numbers
Given the complex number, Z= -√(2i) ,find the argument of Z.
ANS : arg(Z)= -π/2
Quest.2 Complex N0.
Given Z= cos π/6 +cos π/3 .Find argument of Z and modulus of Z.
ANS : arg(Z)= π/6 and mdulus of Z = 1
Thanks in advance.
(i) Differentiate the equation and equate the equation to zero, u shall have a value of x which u substitute in y to have the y-coordinateView attachment 14240
plz someone solve this.
(i) Differentiate the equation and equate the equation to zero, u shall have a value of x which u substitute in y to have the y-coordinate
(ii) Differentiate the equation u got in (i). this is d2y/dx2. Replace the value of x u got in (i) in d2y/dx2. If the value of the latter is negative , the point was negative, else positive.
Hey can u tell me how u upload an image?
(i) Differentiate the equation and equate the equation to zero, u shall have a value of x which u substitute in y to have the y-coordinate
(ii) Differentiate the equation u got in (i). this is d2y/dx2. Replace the value of x u got in (i) in d2y/dx2. If the value of the latter is negative , the point was negative, else positive.
Hey can u tell me how u upload an image?
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