Recent content by ichilouch

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    Engineering Help in Finding the v(t) of the RC circuit?

    How do you solve this?
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    Engineering Help in Finding the v(t) of the RC circuit?

    Homework Statement This is the Problem with the answer: Homework Equations V=RI V_{c}(t)=V_{0}e^{-t/(RC)} The Attempt at a Solution Actually, this is a topic about laplace transform. I tried to solve the problem using the formula. @t<0 I=40/(3+8) = 40/11 A V @ 3 ohms =...
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    How to Position an Object for a 2.5x Inverted Image with a Concave Mirror?

    Sorry, Its 0.14m
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    How to Position an Object for a 2.5x Inverted Image with a Concave Mirror?

    Homework Statement Where do you put an object in front of a concave mirror of focal length 10cm to produce an image that is inverted and 2.5 times greater than the object? Homework Equations \frac{1}{f}=\frac{1}{P}+\frac{1}{Q} Where: Q=Image distance from mirror P=Object's...
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    Is the Series Ʃ n^4 / e^(n^2) Convergent?

    Are there another way on how to test the convergence of this series?
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    Is the Series Ʃ n^4 / e^(n^2) Convergent?

    Homework Statement determine whether the Ʃ n4 / en2 is convergent or divergent? Homework Equations The Attempt at a Solution Using Root test: lim of n4/n / en as n approaches infinity But lim of n4/n as n approaches infinity = ∞0 So: Let N = lim of n4/n as n approaches...
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    Convergence Test for Alternating Series and When to Use It

    Thanks for the reply So rechecking limit of (4/8)^k as k approaches infinity is 0 Then if it is sine or cosine over a variable, the comparison test for it is (-1)^k? and if it is sine or cosine squared, the comparison is 1 only?
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    Convergence Test for Alternating Series and When to Use It

    Homework Statement Ʃ cos(k*pi)/k from 1 to infinity. This is a test for convergence. and when is the proper time to use the alternating series test like using it on (-1)k(4k/8k) would result to divergence since lim of (4k/8k) is infinity and not 0 but the function is really convergent...
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    Using double integration in finding volume of solid bounded by curves?

    Homework Statement The question is "Use double integration to find the volume of the solid bounded by the cylinder x2+y2=9 and the planes z=1 and x+z=5" Homework Equations The Attempt at a Solution I tried to draw the curves and the solid that i formed is a cylinder with a...