Recent content by karan000

  1. K

    Question regarding the output for AC circuit with capacitors

    The diode is reverse biased, so no current flow. Hence Vc2 to remains uncharged also and Vo is 0 for both the positive and negative cycle?
  2. K

    Question regarding the output for AC circuit with capacitors

    I hope this is a step in the right direction, 1. For the first positive cycle, Vc1 = Vi and Vc2 does not charge is there is a short circuit due to the left ideal diode 2. For the first negative cycle, Vc2 = Vi + Vc1 = 2Vi. As the polarity of the output terminals reversed, the output should be...
  3. K

    Question regarding the output for AC circuit with capacitors

    Homework Statement Both diodes are ideal. Answers: (a) Vi (b) -Vi (c) -2Vi (d) none of the above Homework Equations Q=CV The Attempt at a Solution 1. For t=0 to Pi: Cap1 and Cap2 are in series and hence Q1=Q2, therefore Vc1 = Vc2. From this we get Vi = Vc1 + Vc2, hence Vc1 =Vc2 = Vi/2. 2...
  4. K

    Proving summation series inequality

    Question http://puu.sh/52zAa.png Attempt http://puu.sh/52AVq.png I've attempted to use Riemann sums and use the integral to prove the inequality, not sure if this was the right approach to start with as I am now stuck and don't see what to do next. For part (b), I know that if (2√n...
  5. K

    Proving equations, (Discrete maths)

    Homework Statement http://puu.sh/2mrWM I'm practicing for my upcoming exam on discrete mathematics (we're not really too far in yet), and I cannot no matter how hard I try prove the equations. I expand tan(k-1) and then multiply by tan(k) and always end up at a dead end, it is driving me...
  6. K

    How do we know the degree of a root which is also a point of inflexion?

    I'm aware of the the point (1,-16), So as you already know that b=-1 and c=-3, sub in the point to get: -16 = a(1)(1+1)(1-3)^d = 2a(-2)^d Two varibles makes this unsolvable but using guess and check you'll find 3 is the only correct solution (which just makes the whole question...
  7. K

    How do we know the degree of a root which is also a point of inflexion?

    Hey guys, I was looking at an exam I did last year and tried to solve a question, which at the time I couldn't do. Unfortunately I'm running into the same problem I had during the exam, so hear me out on this one Question: The graph below has equation y =ax(x-b)(x+c)^d. Write down the values...
Back
Top