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by anonmeans
Sun Jul 12, 2015 11:00 am
Forum: Trigonometry
Topic: Reciprocal trigonometric ratios
Replies: 5
Views: 50

Re: Reciprocal trigonometric ratios

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...
by anonmeans
Tue Jun 09, 2015 2:37 am
Forum: Forum Rules & Guides
Topic: Was my post reported and if so why?
Replies: 2
Views: 376

Re: Was my post reported and if so why?

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.
by anonmeans
Thu Jun 04, 2015 8:13 pm
Forum: Calculus
Topic: I have this optimization problem that Im having trouble on
Replies: 1
Views: 324

Re: I have this optimization problem that Im having trouble on

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...
by anonmeans
Fri May 15, 2015 8:41 pm
Forum: Intermediate Algebra
Topic: Simplify the following expression...how?
Replies: 3
Views: 231

Re: Simplify the following expression...how?

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",...
by anonmeans
Fri May 15, 2015 7:02 pm
Forum: Intermediate Algebra
Topic: linear programming question - Problem with Constrain
Replies: 2
Views: 202

Re: linear programming question - Problem with Constrain

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.
by anonmeans
Thu Apr 30, 2015 4:03 pm
Forum: Calculus
Topic: integral cos (Pi * x)
Replies: 1
Views: 230

Re: integral cos (Pi * x)

can anyone help me with the intigral of (pi * x) Since \,\pi\, is just a number, the integral of \,\pi\,x\, works just like the integral of any other product of \,x\, and a number: \int\, ax\, dx\, =\, a\, \left(\dfrac{x^2}{2}\right) In your subject line, you also ask about the integral of ...
by anonmeans
Sat Feb 14, 2015 3:38 pm
Forum: Calculus
Topic: Given z=x²+3xy-2y²
Replies: 2
Views: 438

Re: Given z=x²+3xy-2y²

Given z=x²+3xy-2y² Estimate the change in z when x changes from 2 to 2,5 and y changes from 3 to 2,5 What method are you supposed to use to do the estimation? Did they give you any formulas, like partial-dz = (partial-dz/partial-dy)dy + (partial-dz/partial-dx)dx? Or maybe something like is in this ...
by anonmeans
Sat Jan 24, 2015 4:03 am
Forum: Calculus
Topic: Help needed to evaluate limits
Replies: 5
Views: 987

Re: Help needed to evaluate limits

Do you know how to read? Yes, I do. Do you? I showed you all the steps and explained that the result means that the limit of negative 2 times negative numbers, as those numbers get really, really far negative, is positive infinity, so the limit is "+infty". Why do you think showing your w...
by anonmeans
Fri Jan 23, 2015 8:07 pm
Forum: Calculus
Topic: Help needed to evaluate limits
Replies: 5
Views: 987

Re: Help needed to evaluate limits

Anonmeans, thank you, but can you please answer my question? I gave you all the steps. I showed you the limit expression is -2x. I pointed out that x < 0. Algebra says x < 0 means -2x > 0 so, when you take the limit, the value has to be positive. What part do you still need answered for you? :confu...
by anonmeans
Fri Jan 23, 2015 5:06 pm
Forum: Calculus
Topic: Help needed to evaluate limits
Replies: 5
Views: 987

Re: Help needed to evaluate limits

I have no idea how to solve it. Update! I just did this question: a) 3.5 B) infinity, but I am not sure why positive infinity??? Can someone explain it to me, please? The answers are right, I just need to find out why... How did you "do" these if you don't know how they're done? :confused...

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