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by Nats
Mon Aug 26, 2013 6:20 pm
Forum: Intermediate Algebra
Topic: Finding gradient of a tangent
Replies: 4
Views: 1788

Re: Finding gradient of a tangent

what method do they teach you for finding the gradient at a point on a curved line? i only know calc so you need to say what other thing you're supposed to use. thnx In my textbook it states: to calculate the gradient of a curve at a specific point, the following steps need to be taken: *draw a tang...
by Nats
Mon Aug 26, 2013 6:00 pm
Forum: Intermediate Algebra
Topic: Linear Programming
Replies: 4
Views: 1571

Re: Linear Programming

Firstly, thank you very much @buddy. OK, Im getting super, super frustrated, and Im sure you think Im super dumb, but I'll just keep trying till I get it right and hopefully you'll keep helping me till I do. 2nd attempt @nona's reasoning and processing step-by-step with @buddy's replies. a) For what...
by Nats
Mon Aug 26, 2013 4:20 pm
Forum: Intermediate Algebra
Topic: given f(x) = x^2 - 4x + 3 and g(x)= 2x - 1, solve f(x)=g(x)
Replies: 9
Views: 20123

Re: given f(x) = x^2 - 4x + 3 and g(x)= 2x - 1, solve f(x)=g

I cancelled it out with the 2 I got from the sqrt of 4.
by Nats
Mon Aug 26, 2013 11:56 am
Forum: Intermediate Algebra
Topic: k= 3x^2 - x^3
Replies: 3
Views: 1012

Re: k= 3x^2 - x^3

The equation k= 3x^2 - x^3 is satisfied by one value for x between -2 and 4. what can be said about the value of k? think of this like 2 functions: Y1 = 3x^2 - x^3 & Y2 = k. look at the graph of Y1 and think abt where you'd only get ONE number for x going with a number for y = Y2 = k. (but you ...
by Nats
Mon Aug 26, 2013 11:48 am
Forum: Intermediate Algebra
Topic: Finding gradient of a tangent
Replies: 4
Views: 1788

Re: Finding gradient of a tangent

Im taking Cambridge IGCSE Mathematics (0581)

This is a question for my assignment. the graph is already drawn.
by Nats
Mon Aug 26, 2013 11:09 am
Forum: Intermediate Algebra
Topic: k= 3x^2 - x^3
Replies: 3
Views: 1012

k= 3x^2 - x^3

The equation k= 3x^2 - x^3 is satisfied by one value for x between -2 and 4. what can be said about the value of k?
by Nats
Mon Aug 26, 2013 11:05 am
Forum: Intermediate Algebra
Topic: Finding gradient of a tangent
Replies: 4
Views: 1788

Finding gradient of a tangent

A curve with the equation: y= 3x^2 - x^3
tangent drawn at point (3,0)

how to find the gradient?
by Nats
Mon Aug 26, 2013 10:58 am
Forum: Intermediate Algebra
Topic: Linear Programming
Replies: 4
Views: 1571

Re: Linear Programming

I'm sorry, but I do not follow your reasoning. It appears that you have attempted to include at least three different conditions in one equation or inequality. It would likely be more helpful to work in an orderly fashion, clearly stating one's reasoning and processing the information step-by-step....
by Nats
Mon Aug 26, 2013 10:45 am
Forum: Intermediate Algebra
Topic: given f(x) = x^2 - 4x + 3 and g(x)= 2x - 1, solve f(x)=g(x)
Replies: 9
Views: 20123

Re: given f(x) = x^2 - 4x + 3 and g(x)= 2x - 1, solve f(x)=g

But this is totally not what the Quadratic Formula gives, so I think you mean like this: \frac{-(-6)\, \pm\, \sqrt{(-6)^2\, -\, 4(1)(4)}}{2(1)} \frac{6\, \pm\, \sqrt{36\, -\, 16}}{2} \frac{6\, \pm\, \sqrt{20}}{2} \frac{6\, \pm\, \sqrt{4\times 5}}{2} yes. from...

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