Mathematics: Post your doubts here!

[A*****]

why are they taking the domain of gf(x) to be lesser than 1?

We have to take the domain of the inner function which is f

 

[Shemyaa]

We have to take the domain of the inner function which is f

This doesn't become a composite function like that! isn't the range of f(x) the domain of g(x)??
Is this the official ms?
Like all the questions I've solved is literally nothing like this!

 

[asad khan 124746]

range of f(x) is equal to range of its inverse

 

[Shemyaa]

This doesn't become a composite function like that! isn't the range of f(x) the domain of g(x)??
Is this the official ms?
Like all the questions I've solved is literally nothing like this!

Actually yes the answer is 2/3 but you people are saying the wrong concept,
since range of f(x) is >4, substiuting 4 in g(x), it gives us 2/3 therefore 0<gf(x)<2/3 but we don't take the domain of f(x)

 

[Shemyaa]

range of f(x) is equal to range of its inverse

range of f(x) is equal to the domain of f inverse
I assume you must have used this concept when you solved the parts ahead before

 

[A*****]

Actually yes the answer is 2/3 but you people are saying the wrong concept,
since range of f(x) is >4, substiuting 4 in g(x), it gives us 2/3 therefore 0<gf(x)<2/3 but we don't take the domain of f(x)

We NEED the domain to calculate the range of the function fx. How can we do this without it?

 

[asad khan 124746]

range of f(x) is x<1
range of gf(x) is x>4

 

[A*****]

range of f(x) is x<1
range of gf(x) is x>4

You're right

 

[Shemyaa]

We NEED the domain to calculate the range of the function fx. How can we do this without it?

I have no idea what method are you using but using my method is the same answer, I'm still taking the fact that x<1 when I say f(x)>4

 

[A*****]

Actually everyone is right. We all are saying the same thing in different ways

 

[Shemyaa]

Actually everyone is right. We all are saying the same thing in different ways

Yes please can we stay calm Im freaking out now //

 

[Hamza Umair]

For m/j 2019 is rate of change of cone included in the AS P1 syllabus?

 

[A*****]

For m/j 2019 is rate of change of cone included in the AS P1 syllabus?

That's not specified in the syllabus but questions do come

 

[Haris878]

In examiner report it is mentioned that we cannot place minus sign on printed line. Does this apply to fractions, dy/dx and square roots as well?

 

[Wâlèé Atèéq]

HELP!!

 

[A*****]

In examiner report it is mentioned that we cannot place minus sign on printed line. Does this apply to fractions, dy/dx and square roots as well?

Which year of the examiner report is this? I think if we make our line prominent then it's not an issue

 

[A*****]

View attachment 64687

HELP!!

 

[Haris878]

Which year of the examiner report is this? I think if we make our line prominent then it's not an issue

2016 +

 

[Ngenskrt]

CAN ANYONE POST THE AS LEVEL MATH 9709 JUNE 2019 QUESTIONS PLEEEEZ

 

[Ngenskrt]

Have anyone done the may june 2019, please send it here