Recent content by fordy2707

I see ,its just the way I was shown , I thought 143.1301024 would be rounded up to 143 degrees is this not correct ? $\frac{143\pi}{180}$ = 2.49582083 and 143.1301024 x $\pi$ = 449.6564782 and when divided by 180 to get radians =2.498091546 would It not be deemed at the same answer when...

Hi all,just wondering if someone could cast an eye over this, find all the solutions to the following equation at intervals 0,6$\pi$ cos (x)= -0.8 = $143^{\circ}$ my answer by using the quadrant chart = 180$^{\circ}$-143$^{\circ}$= $37^{\circ}$ = 180$^{\circ}$ + 37$^{\circ}$ =...

0-6PI is that the equivalent of 3 full cycles ,1080 degress ?

Hi all, can you show me how to calculate this and breakdown how you get to the answer for me to Understand ,I have been shown what is believed to be the answer from the notes but not a clue How it was reached. Find all the solutions to the following equation at interval 0,6PI cos(x) +...

so I've done a bit more of my research on phase shift and I see where you got $-\frac{\pi}{8}$ from ,which am I correct in saying is -C/B = $\frac{-\frac{\pi}{2}}{4}$ y=3cos (4t+$\frac{\pi}{2}$) amplitude =3 Amps time period =$\frac{2\pi}{4}$ = $\frac{\pi}{2}$ seconds angular frequency...

hi all can you browse over this please, to see if I've got this correct as I just want to make sure I am getting it. for the following functions of time,find the amplitude,period ,angular frequency and phase (im assuming it means phase angle there ?) y=3cos (4t+$\frac{\pi}{2}$) amplitude =3...

Yep I'm with you, thanks.i looked up the wording you used and found this to certainly be the case many thanks for the help.it amazes me that I have this thrown into my questions without any prior explanation of its meaning.

hi all,hope I find you all well and that I've posted this in the correct section ive been given this $z_1$ =1-j2 Question ,find and show the result of $z_1 ^*$ on an argand diagram ,my question is what does the star symbol represent or is it a typo? many thanks

so to revive this (dread) ,having not fully learned this properly yet but not wanting to walk away ,im getting my head around how you come to $= 2\omega_n\sqrt{\xi^2 -1}$ but I am just wondering why can we not calculate and remove the square root of $\sqrt{\xi^2-1}$ to become...

I see, so i treated $2\pi$ as 1 value where its actually 2 different values to be multiplied together . thanks for your help,im happy with how close I got.i will write your advice into my learning material and should be able to do a sum like that on my own next time

so I've been taught basic rearranging of formula which I've found easy now I am given questions which are obviously a lot harder and I've entered the mind black hole if you could point me in the right direction with this where I go wrong make L the subject $f=\frac{1}{2\pi}$...

well I've found this which is good http://www.maths.com/algebra/change-the-subject-of-a-formula/index.htm the problem I am having throughout my maths module on any subject is this,i can always do the basic examples so easily ,but come the crunch question time the questions are ridiculously...

hi all ,does anyone know of good learning resources for rearranging formula ,starting from the basic level all the way to advanced levels ? many thanks

So I have an update, chatted with my tutor today and he apologised after realising he had sent me the wrong quadratic equations supportive question papers to what I had been learning ,which was factoring simple questions ,although to my horror I still have to learn this in my next module...