I'm kind of confused with these

is and the same?

if they are they both can be written as ?

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- April 28th 2013, 11:03 AMameerulislamsinx composition question
I'm kind of confused with these

is and the same?

if they are they both can be written as ? - April 28th 2013, 11:15 AMPlatoRe: sinx composition question
- April 28th 2013, 11:27 AMameerulislamRe: sinx composition question
- April 28th 2013, 12:20 PMHallsofIvyRe: sinx composition question
They're not. Unfortunately, we cannot make every write mathematics correctly (I've

**tried**!) so we have to guess what they really mean!

but is different.

For example, if x= 1 then sin(x)= sin(1)= 0.84147, approximately, so that while [tex]sin(x^2)= sin(1)= 0.84147[tex]. - April 28th 2013, 12:36 PMPlatoRe: sinx composition question
I did warn you not to use by itself!

It is a function notation. As such, it must be written in function notation: .

It is quite often the case that the notation is used in place of .

In several computer algebra systems, one must use for they will not recognize .

But again, reread my post. I told to use () with the sine function.