finding the function? trig problem

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
mathman12
Posts: 1
Joined: Sat Feb 05, 2011 7:21 pm
Contact:

finding the function? trig problem

Postby mathman12 » 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 !

snowdrifter
Posts: 18
Joined: Tue Jan 11, 2011 4:52 pm
Contact:

Re: finding the function? trig problem

Postby snowdrifter » 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
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

I will let you do the work.

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

SD


Return to “Intermediate Algebra”