Recent content by adelin

is necessary to simplified the equation before differentiation? could I use the Quotient Rule without of simplifying ?

1/ln(b)*1/r* dy/dx(r)

my derivative of log4(r)*log2(r)= log2(r)/rln(4)+log4(r)/rln(2) my book says the derivative should be 2(ln(r))/(r(ln(2))(ln(4)) what am I doing wrong?

thank you

yes, this is the integral

it is∫dx/2sqrt(x)+2x

I cannot find a substitution that work for this integral ∫dx/2√x+2x what should I do?

What rule have they used to change the integral from 2x/(x+1)^2?

f(x)=1+sinx what am I doing wrong here? 1+sin(-x)= 1-sin(x)

In this part they arrive to the conclusion that Delta have to be < ε/10. in the next step they arrive to the same conclusion. If δ <1 then δ<10. ( I may be wrong) The next step is what become problematic for me to understand.

This is another proof

Homework Statement source: http://tutorial.math.lamar.edu/Classes/CalcI/DefnOfLimit.aspx

thanks

I have been trying to learn calculus by my own, but when it comes to proving limits I get very confuse. Could somebody explain me what is being done here? If you know any resources that could help me with this task let me know. here is the source...

My main problem in math. it's when it comes to the application of the material that I have learned. What do you recommend to read or do to improve this skills?