Recent content by Missy

Ok sorry, it was a misunderstanding of context. I have found out that my powers have calculated incorrectly because I was using a poor and unbranded calculator. This is why I was having trouble solving the formula. I will re attempt it in the next 48 hours and let you know if I have any problems.

Ok, firstly, please could you atleast be civil. I don't appreciate the tone in your message, I would have happily given you the answers had you asked me nicely. I'm here for help with my homework because I don't know how to solve it to get the right answers, I would appreciate it if you...

Hi, I have tried plugging in the time constants I.e. 0,1,2,3 but that then makes them 1^2.2, 2^2.2, 3^2.2 which produces high values, it didn't seem right?

Hi, I didn't post anything up for 2 and 3 because I don't know how to solve the table to be able to draw the graph and the area between 5 and 9 seconds. Once I get the table I can draw the graph and area on easily. We have to leave our textbooks at work so I don't have it with me.

Homework Statement Ok guys, its been a while since I have done this one so I don't even know where to begin. Here is the problem I have to complete: The power (in watts) from an engine is represented by the equation below, where t is the time in seconds. P = 30t^2.2 + 3t 1) Draw a table...

I know that the rule that is applying to my formula of i = 12.5 (1-e^(-t/cr) is: "a(1-e^-bt)" which differentiates to abe^-bx I have got as far as 12.5e^(-7/6) and I can see that I need to multiply 12.5 by 7 and then subtract 1 from the fraction but this gives me an overall answer that...

The slope of the straight line works out at a gradient of 0.65 so it's increasing. However, when I attempted the differentiation of the entire formula I got 3.89 which indicates that either my gradients wrong (unlikely) or my differentation is wrong (likely). Please can i have more help...

I can see your answer, that's fantastic, thank you so so so much for helping me! I will plot the graph when I get in tomorrow and let you know how I got on :)

Hi Mark, Thanks for your assistance. I did have 1 as my time constant in my workings. I am struggling to reach the same answer as you for the 0.1. I really wish that my teacher had covered this for us and maybe I would see it more clearly.

Our teacher didn't cover any rules past the 5 that I listed, however, it has come up in the distinction work that I am doing. I will look over the link that you posted now.

Homework Statement [/B] I need to differentiate the exponential function i = 12.5 (1-e^-t/CR) and I need to plot a table so that I can do a graph of i against t but I'm not sure how. (CR is the equivelant of Capacitance 20 Micro Fards and Resistance 300 Kilo Ohms)Homework Equations [/B] How do...

Thank you Greg :)

I am training to be an engineer and I am currently doing my distinction work in calculus and electronics. I am here to see if I can get any assistance in my homework as I have a learning difficulty and I am struggling to visualise the solutions.