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Tutors Answer Your Questions about Functions (FREE)
Question 122742: let f= -3x+4 and g= -x^2+4x+1 find the following:
g(-2)
f(4)-g(4)
These two problems are giving me a headache. Please show me step by step how to solve so I can see what I'm doing wrong. Thank you in advance for your help
Click here to see answer by MathLover1(1183)   |
Question 122848: Given g(x)=2x-3, find g(x+2)-g(x):
My solution: find g(x+2)
=2(x+2)-3
=2x-1
Since g(x+2)=2x-1,
2x-1-2x-3
2x-2x-1-3
=-1-3
=-4
The answer is supposed to be 4, but I have -4
Isn't minus 1 minus 3 = minus 4?
=-2
I have a textbook (ISBN 0-321-13193-2)
Title: Basic Technical Mathematics, 8th edition
But the instructor gave us handouts of math functions to solve instead of using the book.
Click here to see answer by oscargut(682)  |
Question 123214This question is from textbook college algebra
: a rancher has 360 yds of fencing with which to enclose two adjacent rectangular corrals- one for sheep and one for cows. A river forms one side - suppose the width of each corral is x yards
a- express the total area of the two corrals as a function of x
b- find the domain of the function
c- using the graph if the function shown below determine the dimensions that yield the maximum area
60, 10,800This question is from textbook college algebra
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 123448: Please tell me if my thinking is correct on this problem. I have the express the rational exression in lowest terms.
If i figure that 2 goes into 38 19 times, m^3 - m^10 makes a neg exponent so I am going to put m^7 in the denominator, p^2-P^1 is p, that will go into the numerator. My answer should be.....
Correct??
Click here to see answer by jim_thompson5910(13794)  |
Question 123559: I am practicing finding the domain of an expression in interval notation. A particular problem has brought confusion
radical x(square)-7x-18/x-12
I know that the denomenator cannot be zero, otherwise it would be undefined. So would the answer be [-9,2] U [2,infinity) and x cannot =12 ?
Am I on the right track with this?
Click here to see answer by stanbon(26297) |
Question 123559: I am practicing finding the domain of an expression in interval notation. A particular problem has brought confusion
radical x(square)-7x-18/x-12
I know that the denomenator cannot be zero, otherwise it would be undefined. So would the answer be [-9,2] U [2,infinity) and x cannot =12 ?
Am I on the right track with this?
Click here to see answer by chitra(359) |
Question 123760: Can you tell me if I am working this problem correctly. I am simplifing the expression, using only positive exponents in my answer.
I make the exponent positive by doing this 
Next I find that my LCD =
By multiplying all numerators by and canceling out where possible, I come up with a final answer of 
Am I correct with my steps and final answer? Thanks for your help in advance!
Lee
Click here to see answer by checkley71(8405) |
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