Recent content by Rudders

Hi, Yes, i have graphed the function with the value of k being -8,0,6 and 10 (that was a previous question), but the value k can be anything for this question. How can I find the number of solutions produced?

Homework Statement Let hk : R -> R whereh_{k}(x)=x^3-6x+k and k is a real number Find the value(s) of k for which the equation hk has 1,2 or 3 solutions. The Attempt at a Solution Don't know how to approach this. Thanks!

Hmm. Think I understand now. Thanks :)

Hi, I have a little confusion with vectors. I have memorised the formula so I can apply it, but I don't feel I really understand how it works. One thing that confuses me is this. How does a unit vector exactly show direction. I've memorized and can blindly believe that this is how it is...

Hi, I'm just stumped on how to solve the following type of trig equation. Could someone show working / a tutorial on how to solve similar equations. I'm fine with simple ones like: 4 + sinx = 3 , but this style has me stumped: sin(x + 30) = 1 or tan(x + 45) = 1 Thanks!

Hi, I was just confused as to the semi-structural formula nomenclature of -ene and -yne structures. The thing that I don't understand is the = sign in the formula. For example: CH3CH2CH=CH2 What does that equals sign mean? Does it represent where the double bond is located? If so...

anyone?

Hmm. Ok can you please check this if possible. I1 = I2 + I3 Therefore I2 = I1 - I3? Points A + C + E + F + D + B = 0 (Due to the voltage law?) Points A + C + 3 + D + B = 0 (confused because of the battery...)? Loop 1 = Top half of the circuit (270 => 680 => +3V => 1k) Loop 2 = Bottom half of...

Sorry I'm confused. Are there any good examples / tutorials on how to do this?

Homework Statement For this circuit, I'm fairly confused with the extra battery. I need to find the Voltages at A (Between 5V Battery and 270 resistor), B (Between 5V Battery and 1k resistor), C (Intersection between 270, 220 and 680 resistors), E (in between 220 and 330 resistor) and...

Thanks heaps! :) Think I understand now!

Hi, I'm a little confused as to Current and Voltage, and I was wondering if someone could tell me if my understanding is correct and/or point me to a good tutorial on current/voltage and basic electronic circuit principles. As well as some good tutorials on circuit analysis. So this is how I...

In terms of number crunching, computers have long since out-performed the human brain. However, the human brain is far more powerful because of intuition. A computer has to physically go through all the possibilities before it reaches a good (or the best one). For example. If you were told: "Get...