- Sun Feb 07, 2016 9:50 pm
- Forum: Trigonometry
- Topic: Need help with a problem: sin^2(x+1) = 3sin(cosx-sinx)+3
- Replies:
**1** - Views:
**19**

I don't know how to solve it. It's only one equation: sin^2(x+1) = 3sin(cosx-sinx)+3 Are you sure this is right? Because Wolfram Alpha can't do it exactly and if they can't do it exactly, I don't see how you're supposed to do it at all. To see what I mean, copy and paste this into your browser: htt...

- Mon Jan 04, 2016 2:26 pm
- Forum: Calculus
- Topic: One more question: line tangent to y=2 sin(2 x+(3pi/4)) at x=pi/8
- Replies:
**4** - Views:
**282**

Wow this is really quick but I have one more question from the book. It's 18 under the AB Diagnostic Test: There are tons of books. Other people can't know which "the book" you're using and probably won't have it either. It's better just to give the whole problem. Thanks. an equation to t...

- Sat Dec 05, 2015 2:30 pm
- Forum: Intermediate Algebra
- Topic: Math Apps: A square piece of paper ABCD is black on one side, white on the other side
- Replies:
**2** - Views:
**337**

A square piece of paper ABCD is black on one side and white on the other side and has an area of 3 in^2. Corner A is folded over to point E which lies on the diagonal AC such that the total visible area is half black and half white. So you're starting with this: B*---------*C | / | | / | | / | | / ...

- Sat Sep 05, 2015 3:08 pm
- Forum: Beginning Algebra
- Topic: Simplified x(10+2x-3x^2) Correctly as 10x+2x^2-3x^3
- Replies:
**1** - Views:
**464**

Hi could you please tell me if I have simplified the following correctly. f(x)=x(10+2x-3x^2) simplified is 10x+2x^2-3x^3. Assuming simplified means expanded out, this is the same thing I get. Also is it possible to simplify this expression: f(x)=7+18x/6x The simplified form (probably "all in o...

- Mon Aug 17, 2015 2:34 pm
- Forum: Intermediate Algebra
- Topic: Roots of exponential expressions
- Replies:
**3** - Views:
**465**

Sleepy Ash wrote:...what makes a problem like this

\sqrt{b^1^8}=\left| b^9 \right|

End up with an absolute value.

I don't understand how they got that 1^8 = 9?? (b^1)^8 = (b)^8 = b^8, not b^9.

- Sun Jul 12, 2015 11:00 am
- Forum: Trigonometry
- Topic: Reciprocal trigonometric ratios
- Replies:
**5** - Views:
**462**

i did the inverse function of tan (3.2404) and got 72.8.... my answer sheet says its supposed to be 17, what did i do wrong?what am i supposed to do? It's cotangent, not tangent. Do the relationship between cotangent and tangent to convert the equation to what your calculator can do: tan(x)=1/cot(x...

- Tue Jun 09, 2015 2:37 am
- Forum: Forum Rules & Guides
- Topic: Was my post reported and if so why?
- Replies:
**2** - Views:
**1164**

The only "counting" problem I'm seeing is from October of last year: viewtopic.php?f=15&t=4039

I think they don't want way old threads bumped.

I think they don't want way old threads bumped.

- Thu Jun 04, 2015 8:13 pm
- Forum: Calculus
- Topic: I have this optimization problem that Im having trouble on
- Replies:
**1** - Views:
**876**

This is the questions: Person A and B sells item x for $200 a month, and they sell 150 objects per month Person B says that for every $15 rebate they give, they will get 50 more objects sold. Person A disagrees. Who is correct? What is the amount of rebate that should be given? What price will maxi...

- Fri May 15, 2015 8:41 pm
- Forum: Intermediate Algebra
- Topic: Simplify the following expression...how?
- Replies:
**3** - Views:
**651**

Simplify the following expression. Write the answer with positive exponents and assume the variable represents a nonreal number. - 1/9 w^-8 times (-36w^-3) I don't see why you're supposed to "assume the variable represents a [complex or imaginary] number"...? Before the "times",...

- Fri May 15, 2015 7:02 pm
- Forum: Intermediate Algebra
- Topic: linear programming question - Problem with Constrain
- Replies:
**2** - Views:
**601**

I'm sorry but I don't understand what you're trying to do. What is the EXACT text of the exercise? What are the EXACT parameters? How are the constraints defined? What do you mean by "submitting as two scores"?

Thanks.

Thanks.