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soniya duge
Nov 19, 2020, 5:37:34 PM11/19/20
to Discussion forum for Mathematics for Data Science I
If f:R→R is defined by f(x)=√14−(3x+35−5x4), then the domain of the function f is
(−∞,−3](−∞,−3]
[3,∞)[3,∞)
(−∞,3](−∞,3]
[−3,∞)
To resolve this i checked by putting in the value -3 & +3. Is there any other easy way to
do this?
Regards,
Soniya Duge
Anand Iyer
Nov 19, 2020, 10:05:52 PM11/19/20
to Discussion forum for Mathematics for Data Science I, soniy...@gmail.com
This is solved using inequalities.
Essentially, the term square-root for negative numbers isn't defined. So, the term
3x+(35−5x)/4 <= 0
when you simplify this, you'll get the answer...
Anand Iyer
Nov 19, 2020, 10:07:05 PM11/19/20
to Discussion forum for Mathematics for Data Science I, Anand Iyer, soniy...@gmail.com
Sorry, read the inequality as 3x+(35−5x)/4 <= 14
soniya duge
Nov 20, 2020, 4:30:42 AM11/20/20
to Discussion forum for Mathematics for Data Science I, anandd...@gmail.com, soniya duge
Got it. Thanks !!
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