- Tue Jul 19, 2011 9:59 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Help with solving equations: (x+3)(x-3)>0, x^2-2x-15</= 0,
- Replies:
**3** - Views:
**2021**

Thank you it all helped. I am stuck however on the trig equation. I am not sure what to do after I get 2sin(x)cos(x)=sin(x).

- Tue Jul 19, 2011 2:53 am
- Forum: Calculus
- Topic: help with evaluation
- Replies:
**2** - Views:
**1838**

thankyou

- Mon Jul 18, 2011 7:31 am
- Forum: Calculus
- Topic: help with evaluation
- Replies:
**2** - Views:
**1838**

how would i evaluate f(x+h)-f(x)/h and simplify if f(x)=x^2-2x. Please help.

- Mon Jul 18, 2011 3:04 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Help with solving equations: (x+3)(x-3)>0, x^2-2x-15</= 0,
- Replies:
**3** - Views:
**2021**

Can someone please help or guide me with these problems.

Thanks in advance.

less than or equal to = </=

(x+3)(x-3)>0

x^2-2x-15</= 0

sin2x=sinx, 0</=x</=2pi

logx+log(x-3)=1

Thanks in advance.

less than or equal to = </=

(x+3)(x-3)>0

x^2-2x-15</= 0

sin2x=sinx, 0</=x</=2pi

logx+log(x-3)=1

- Mon Jul 18, 2011 1:55 am
- Forum: Intermediate Algebra
- Topic: help with operations with functions
- Replies:
**6** - Views:
**5766**

so would it be 1/5,1/4,1/7. and by the way thankyou

- Sun Jul 17, 2011 11:57 pm
- Forum: Intermediate Algebra
- Topic: help with operations with functions
- Replies:
**6** - Views:
**5766**

ok so that helped alot but i am having trouble understanding how to do the function operation with 1/f(x) due to the fact that f(x) has a list of points, f(x)={(3,5)(2,4)(1,7)}.

- Sun Jul 17, 2011 1:34 am
- Forum: Intermediate Algebra
- Topic: help with operations with functions
- Replies:
**6** - Views:
**5766**

Thank you very much. I have two more questions if someone is willing to help. Using the same f(x), how would I go about solving 1/f(x). And if k(x)=x^2+5 and g(x)=sqrt(x-3) how would I figure out (kg)(x).

- Sun Jul 17, 2011 12:08 am
- Forum: Intermediate Algebra
- Topic: help with operations with functions
- Replies:
**6** - Views:
**5766**

Ok so f(x)={(3,5)(2,4)(1,7)}, and g(x)=sqrt(x-3). I have to figure out (f+g)(1). Any ideas? Thanks in advance.