- Wed Feb 10, 2016 2:34 pm
- Forum: Beginning Algebra
- Topic: If 5,a,b are multiplied to form the product 5ab then...
- Replies:
**1** - Views:
**5**

i have a simple question here, i was reading hall and knight algebra .there it was said that if 5,a,b are multiplied to form the product 5ab then 5 is called the coeffitient of remaining factors.i here have a question. 5 is a coeff of a or b or ab?what is correct? The coefficient is the number-only...

- Mon Jan 04, 2016 12:44 am
- Forum: Intermediate Algebra
- Topic: Need help finding f(x)
- Replies:
**1** - Views:
**233**

how can I find: ((f(x+h) - f(x))/h If f(x) = 1/(square root x) Can someone help me? You can do this like they show here . Work it step by step like they show. What is f(x) for this? What is f(x + h), after simplifying? What is the subtraction, after simplifying? Please show all your work for each p...

- Mon Nov 30, 2015 12:32 pm
- Forum: Matrix (Linear) Algebra
- Topic: Multiplying matrices / corresponding systems of equations
- Replies:
**2** - Views:
**231**

Did a fellow student solve this here?

- Mon Nov 30, 2015 12:20 pm
- Forum: Calculus
- Topic: Is f(x)=sqrt(x^2) differentiable at x=0?
- Replies:
**2** - Views:
**202**

I've seen the absolute function described as a composite function which is clearly not differentiable at x=0. However I've also seen it described as f(x)=sqrt(x^2) which I have been led to believe is differentiable at x=0. My understanding is that it's not a sharp point, it's an infinitely tiny cur...

- Fri Nov 13, 2015 9:29 pm
- Forum: Trigonometry
- Topic: Finding all the solutions of the equation
- Replies:
**4** - Views:
**223**

Sorry, I honestly have no idea, why would you do that? :confused: I think the poster was trying to point out that your equation is a quadratic type so you can apply the same formulas. Here you can plug into the quadratic formula (at the link in that post) to get simple solve-able trig equations. So...

- Fri Nov 06, 2015 7:28 pm
- Forum: Calculus
- Topic: Integration using algebraic substitution
- Replies:
**4** - Views:
**349**

bazbeatz wrote:Well then i get...

=1/30 (5(x-2)^6 + 12(x-2)^5)+C

which is still different to the answer provided unless i am missing something

What happens when you take the common factor of (x - 2)

(1/30) [ 5(x - 2)

- Fri Nov 06, 2015 2:09 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Equation for a square
- Replies:
**1** - Views:
**331**

But that "astroid" is a curve. A square isn't curved, so the same kind of equation probably won't work. The only thing I could find is stuff like here. Good luck!

- Fri Nov 06, 2015 2:07 am
- Forum: Calculus
- Topic: Integration using algebraic substitution
- Replies:
**4** - Views:
**349**

What do you get if you do the back-subbing to get back to "x" (instead of "u")?

- Thu Nov 05, 2015 12:51 am
- Forum: Uncategorized
- Topic: Tick tock!
- Replies:
**2** - Views:
**236**

In a 12 hours period, starting exactly at 00.00, how often does: 1: the minute hand overlap the hour hand The minute hand doesn't cross over the hour hand from midnight (00:00:01) to 1am because the minute hand is always "ahead" of the hour hand. The minute hand crosses over once an hour ...

- Tue Oct 20, 2015 11:58 pm
- Forum: Intermediate Algebra
- Topic: inverse f(inverse g(x)) = inverse g(inverse f(x))
- Replies:
**2** - Views:
**312**

f(x) = 24x-15 and g(x)=2x-d where d is an unknown value, it is known that inverse f(inverse g(x)) = inverse g(inverse f(x)) I have to first of all find the value of d, and secondly find; inverse f(inverse g(20)) We have been using mathCAD to solve similar but I really want to learn how to solve thi...