Recent content by Thendi

I found the derivative of sqrt(2x+1) which is (2x+1)1/2 Do you use the chair rule?

Homework Statement Determine the coordinates of the points on the graph of f(x) = _/'2x+1 where the tangent line is perpendicular to the line 3x+y+4 = 0 _/' -means square root Homework Equations f(x) = _/'2x+1 3x+y+4 = 0 The Attempt at a Solution I made it equal to y like y= -3x-4...do I...

oh I got the answer already. Thanks a lot guys for the help especially Dick. This is going to help me big time for my MCV. I need to ask one more question before I sleep. Thanks again. :P

no no i took -5 out of [-15x^2 - 20x-6] so i get -5[3x^2 - 4x^-6] ~Dick I am so confused, can you please do the whole question step by step if possible because I really need to know where I did the mistake. Anyone will do

I am confused what does * mean? "i) I said 4/x^5=4*x^(-5). You still need to differentiate it." i did differentiate it...i get -20x^-6 is it right?

ok I get -15x^2+4x^-5 i took out -5 as a common factor but the answer is -5(3x^8 + 4)/x^6 3x^8 where is the power of 8 coming from isn't it suppose to be 2

y = -5x^3 + 4/x^5 + 1.7pi see how its like 4/x^5 how do you find the derivative of that. I got the first part -15x^2+?

Homework Statement y = -5x3 + 4/x5 + 1.7pi Homework Equations Differentiate each Function. Derivatives The Attempt at a Solution I have done question like these before but this is the first time using pi. I used all derivative rules none of them give me the right answer. The answer I am...