Recent content by maobadi

I did not quite get by ..any solutions of the quadratic are actually solutions of your log equation... Could you explain it in simple terms please

When I did it that way, I get a equation with x squared...can you have two values for x...??

Homework Statement log3(5x-4)+log3(2x+7) = 2 Homework Equations log3(5x-4)+log3(2x+7) = 2 The Attempt at a Solution log3(5x-4)+log3(2x+7) = 2 Find the value for x...?

Homework Statement I am confused. My thinking was if a voltage source is given in polar form with the magnitude and angle eg. (10 L0o)then it is Vpk and if only magnitude is given then it is Vrms. Is it right. I am really confused. Homework Equations The Attempt at a Solution I...

Homework Statement differentiate y = (3x2-4)1/2+(x2+4)1/2 with respect to x Homework Equations y = (3x2-4)1/2+(x2+4)1/2 The Attempt at a Solution dy/dx = (3x2-4)1/2dy/dx+(x2+4)1/2dy/dx Is it correct...? for the first part let u = (3x2-4)1/2 du/dx = 6x y = u1/2 dy/du = 1/2u-1/2 dy/dx =...

Homework Statement Quick one guys, I am very confused about the impedance of a RLC circuit. Say when you have more than one resistor or more than one capacitor or inductor in different combination, you get a impedance with two parts(imaginary which is the reactive part and the resistive...

solving the quadratic equation i get x = (5+18.5i) and (5-18.5i) which are the complex roots and does this mean that it will never touch the x-axis...?

what do you mean by "What should you expect if no zero derivatives exist?" What do I do? My question for the problem is are both part1 and part 2 the same thing. I mean part 1 says calculate and part 2 says show by differentiation and solving a quadratic equation. Do I have to differentiate(for...

Homework Statement 1. Calculate the gradient of the curve y = 2x3 - 5x2 + 46x + 87 at the point where it crosses the x-axix. 2. Show by differentiation and solving a quadratic equation, that there are no points on the above curve where the gradient is zero.Homework Equations y = 2x3 - 5x2 +...

Homework Statement if z = 1/sqrt 2 + i/sqrt2 Homework Equations show that z + z4n+1 = 0, when n is any odd integer. if n is an even integer, find z + z4n+1 in rectangular form. The Attempt at a Solution I have no clue where to start...

Homework Statement A cannonball is fired with an angle of elevation of 70o. Its range is 1km. Neglect the air resistance and calculate: 1. the time the cannonball is in the air. 2. its initial velocity. 3. its range and height at 18s after firing 4. the other range at which the height...

MATLABdude first thanks for the reply, I know that the maximum power transfer occurs when the load resistance is equal to that of the voltage source internal resistance. Are you saying that looking from the 33ohm resistor point of view and calculating the total resistance of all the...

somebody help...please

resistor value ... Homework Statement see the attached diagram Homework Equations What value of resistor in the place of the 33 ohm resistor would draw maximum power from the rest of the circuit and what power would it draw? The Attempt at a Solution I can figure out the currents flowing...

thanks guys, got the answer it does not matter of which one you take the phasor of as long as you don't mix them up...