Maths Function properties
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this may be quite a simple question but please can someone let me know if everything written on this image is correct? Thank you, any help is much appreciated. (https://i.stack.imgur.com/0Sozz.jpg)
functions
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this may be quite a simple question but please can someone let me know if everything written on this image is correct? Thank you, any help is much appreciated. (https://i.stack.imgur.com/0Sozz.jpg)
functions
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up vote
0
down vote
favorite
up vote
0
down vote
favorite
this may be quite a simple question but please can someone let me know if everything written on this image is correct? Thank you, any help is much appreciated. (https://i.stack.imgur.com/0Sozz.jpg)
functions
this may be quite a simple question but please can someone let me know if everything written on this image is correct? Thank you, any help is much appreciated. (https://i.stack.imgur.com/0Sozz.jpg)
functions
asked Aug 26 at 22:49
user564900
365
365
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1 Answer
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yes, the mathematics written on the paper is correct.
Unfortunately the notation inverse function is very very confusing.
Students get confused by for example the difference between $$ sin ^-1 x $$ and $$ frac 1sin x$$ where the first one is the inverse sine function and the second one is the co-secant function, which are totally different functions.
After some practice it gets easier to find out which is which from the context.
Thank you for your reply. Yes the false âÂÂarcsin(x) = cosec(x)â statement is what led me to find out if âÂÂf^-1(x) is not equal to (f(x))^-1â is true for all functions aswell as trig functions.
â user564900
Aug 27 at 0:27
@user564900 Thanks for your attention and understanding .
â Mohammad Riazi-Kermani
Aug 27 at 0:28
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
yes, the mathematics written on the paper is correct.
Unfortunately the notation inverse function is very very confusing.
Students get confused by for example the difference between $$ sin ^-1 x $$ and $$ frac 1sin x$$ where the first one is the inverse sine function and the second one is the co-secant function, which are totally different functions.
After some practice it gets easier to find out which is which from the context.
Thank you for your reply. Yes the false âÂÂarcsin(x) = cosec(x)â statement is what led me to find out if âÂÂf^-1(x) is not equal to (f(x))^-1â is true for all functions aswell as trig functions.
â user564900
Aug 27 at 0:27
@user564900 Thanks for your attention and understanding .
â Mohammad Riazi-Kermani
Aug 27 at 0:28
add a comment |Â
up vote
2
down vote
yes, the mathematics written on the paper is correct.
Unfortunately the notation inverse function is very very confusing.
Students get confused by for example the difference between $$ sin ^-1 x $$ and $$ frac 1sin x$$ where the first one is the inverse sine function and the second one is the co-secant function, which are totally different functions.
After some practice it gets easier to find out which is which from the context.
Thank you for your reply. Yes the false âÂÂarcsin(x) = cosec(x)â statement is what led me to find out if âÂÂf^-1(x) is not equal to (f(x))^-1â is true for all functions aswell as trig functions.
â user564900
Aug 27 at 0:27
@user564900 Thanks for your attention and understanding .
â Mohammad Riazi-Kermani
Aug 27 at 0:28
add a comment |Â
up vote
2
down vote
up vote
2
down vote
yes, the mathematics written on the paper is correct.
Unfortunately the notation inverse function is very very confusing.
Students get confused by for example the difference between $$ sin ^-1 x $$ and $$ frac 1sin x$$ where the first one is the inverse sine function and the second one is the co-secant function, which are totally different functions.
After some practice it gets easier to find out which is which from the context.
yes, the mathematics written on the paper is correct.
Unfortunately the notation inverse function is very very confusing.
Students get confused by for example the difference between $$ sin ^-1 x $$ and $$ frac 1sin x$$ where the first one is the inverse sine function and the second one is the co-secant function, which are totally different functions.
After some practice it gets easier to find out which is which from the context.
answered Aug 26 at 23:20
Mohammad Riazi-Kermani
30.6k41852
30.6k41852
Thank you for your reply. Yes the false âÂÂarcsin(x) = cosec(x)â statement is what led me to find out if âÂÂf^-1(x) is not equal to (f(x))^-1â is true for all functions aswell as trig functions.
â user564900
Aug 27 at 0:27
@user564900 Thanks for your attention and understanding .
â Mohammad Riazi-Kermani
Aug 27 at 0:28
add a comment |Â
Thank you for your reply. Yes the false âÂÂarcsin(x) = cosec(x)â statement is what led me to find out if âÂÂf^-1(x) is not equal to (f(x))^-1â is true for all functions aswell as trig functions.
â user564900
Aug 27 at 0:27
@user564900 Thanks for your attention and understanding .
â Mohammad Riazi-Kermani
Aug 27 at 0:28
Thank you for your reply. Yes the false âÂÂarcsin(x) = cosec(x)â statement is what led me to find out if âÂÂf^-1(x) is not equal to (f(x))^-1â is true for all functions aswell as trig functions.
â user564900
Aug 27 at 0:27
Thank you for your reply. Yes the false âÂÂarcsin(x) = cosec(x)â statement is what led me to find out if âÂÂf^-1(x) is not equal to (f(x))^-1â is true for all functions aswell as trig functions.
â user564900
Aug 27 at 0:27
@user564900 Thanks for your attention and understanding .
â Mohammad Riazi-Kermani
Aug 27 at 0:28
@user564900 Thanks for your attention and understanding .
â Mohammad Riazi-Kermani
Aug 27 at 0:28
add a comment |Â
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