Recent content by DBeckett91

In the above line there is -56x and +112x so all I did was 112x-56x to gain +56x, it was just some simplification of the equation so I had fewer numbers to work with later on

Homework Statement S = (8x^2 - 7x + 125)/(8x+7) Where the value of x is unknown The Attempt at a Solution u = 8x^2 - 7x + 125 du/dx = 16x - 7 v = 8x + 7 dv/dx = 8 ds/dx = (v*du/dx - u*dv/dx)/v^2 = (8x+7*16x-7 -...

Homework Statement s = 8sin(125t)e^-7t Where the value of t is unknown The Attempt at a Solution u = 8sin(125t) du/dt = 1000cos(125t) v = e^-7t dv/dt = -7e^-7t ds/dt = v*du/dt + u*dv/dt = (e^-7t *...

Sorry that was a typo, the post is now edited to be the numbers I intended. As for the value of A, k and w: A = 8 k = 7 w = 125 I must have missed that bit also

Thanks in advanced for help on this, if I have gone wrong anywhere along the way please don't hesitate to point out my mistake(s). Homework Statement Differatiate each question with respect to the variable. s =(Ax^2-kx+w)/Ax+k Homework Equations Quotient rule...

I have 2 separate equations that I have to finish, but my lecturer is extremely slow at marking and I need to get it marked off asap, so if you could give me a hand it would be hugely appreciated. For all of these equations I need to differentiate with respect to the variable and give the...