Recent content by srg263

Thanks for your response. Does it represent the z plane?

Hi Euge, Thank you for your response - i very much appreciate your time. Unfortunately i didn't quite understand your explanation there regarding the orientation of the planes that gives this solution set. I was thinking drawing some diagrams might help me to understand, but I'm not really...

Yes with that explanation and also revisiting the textbook this is starting to make sense now. Thanks so much, you've been so helpful!

Thank you for updating the solution, greatly appreciated. If possible, i was wondering if you could explain how $$ z4 = -\sqrt{3} + i $$ can be written in two different ways as you have shown below. I don't understand this step. Many thanks.

Hi MARKFL, Many thanks for that response. I'm still unfortunately a little confused. Also, i noticed you used z4 = $$ \sqrt{3} +i $$ when the question is $$ -\sqrt{3} + i $$ sorry if my question didn't make this clear with my poor formatting. As such, I'm thinking you're working would be...

Following on from this question MarkFL, i had a final problem i was hoping you (or other users) may be able to assist with. Express z4 = $$ \sqrt{-3} + i $$ in polar form and hence solve the equation z^2 = z4. So far i have found that the polar form of z4 = $$ 2 e^{}\frac{5i\pi}{6} $$...

I'm using Chrome and OS X Yosemite. Am i correct in understand i need to add in $$ $$ coding around the symbol/commands? I am placing my cursor in the text editor prior to clicking the symbols. I've had a go below, hopefully that works!$$ \infty \ne \alpha $$

Thank you! Apologies for you needing to correct the post. I can't figure out the symbol/command function with coding? I can see the symbol command set to click on on the right but when i click, the symbols don't go into this text box I'm writing in? So sorry but I'm really useless with IT, I've...

Hi MarkFL, Thanks so much for your response - really appreciated! I've been looking further into the properties comment and found this in my text... Properties of complex numbers: $$\frac{\text{cis}(\theta)}{\text{cis}(\partial)} = \text{cis}(\theta-\partial)$$ and...

Hello Maths Help Board Users, I was hoping for some guidance on the following problem. Thanks in advance for your contributions and time. "A fish population grew according to the following quadratic model - the number of fish on day t is given by P (t) = 800t - t2" Q) Find the average growth...

Hello everyone, I have a complex number problem that i would greatly appreciate some help with. Thanks in advance to anyone offering their time to make a contribution. Q) Write the following in polar form: I have attempted the question (please see my working below) and have been advised that i...

Hi all, I'm stuck on progressing a problem i have received some feedback around as detailed below. I would greatly appreciate some assistance, and thank you in advance for your time and contributions. So i have a linear system: Which is row reduced to: I have identified that the system has...

Ahhhh ha! Yes i can see now i was a bit off by equating non-negative as just positive i.e. >0. Thank you so much! :-)

Hi MarkFL, Thank you for moving the thread and for taking the time to respond. Your guidance was very helpful. I ended up graphing the function which was also helpful. Am i correct in understanding the function is non-negative (value of the function is >0) in the intervals: (- ∞, -6) and (6, ∞)...

Hi all, Any help with part (a) of the below question would be greatly appreciated, and i thank you in advance for your time. Q) State where the function y= x^4 - 36x^2 is a) non-negative b) increasing c) concave up Please note i have attached my workings. I think i am confused when saying the...