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by **mathman12** on Sat Feb 05, 2011 7:25 pm

find the function :
d) f(-x)
equation : 2x+1/3x-5
answer: 2x-1/3x-5

second equation:
e) -f(x)
equation : 2x+1/3x-5
answer: -2x-1/3x-5

I ONLY NEED THE WORK !

**Sponsor**

by **snowdrifter** on Sun Feb 06, 2011 1:33 am

mathman12 wrote:find the function :
d) f(-x)
equation : 2x+1/3x-5
answer: 2x-1/3x-5

second equation:
e) -f(x)
equation : 2x+1/3x-5
answer: -2x-1/3x-5

I ONLY NEED THE WORK !

Your answer to "d" is incorrect: the answer is $\frac {-2x+1} {-3x-5}$
What f(-x) means is wherever you see an "x" in the original equation put (-x) and then simplify.

Your answer to "e" is correct.
What -f(x) means is that you muliply the enitre equation by -1 and then simplify: like this $-1(\frac {2x+1} {3x-5})$

I will let you do the work.

-- by the way, this isn't a trig problem.

SD

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