cant send you a private message so i just post my question about your reply to my post.it just gave the final answer?how do i get the solution?thanks!

thank you georgios kokovidis for acknowledging my question.thank you so much!however i still have questions.can anybody here please help me with this type of questions,im not an engineering or math major,so you can guys say im so bad with math.please help me.this are the questions. sketch the following and convert to rectangular: > 1.)x=t^(3), y=t^(2); 2.)x = (sec t)+2, y = (tan t)-1 3.) r = 2+2sin4thetha 4.) r = 4cos2theta find the dy/dx of the following: > 1.)x=t^(3), y=t^(2); 2.)x = (sec t)+2, y = (tan t)-1 3.) r = 2+2sin4thetha 4.) r = 4cos2theta find the equation of the tangent line to the function with the indicated information:

guys please help me with this questions. instruction:determine whether the following converge or diverge {n/n+1} (∑)(2^(n))/(n^(2)) (∑)((n!)^(2))/((2n)!) (∑) (n.3^(2n))/(5^(n-1)) (∑) (-1)^(n+1) n/(n^(2)+4) sum((-1)^n*n*(1/(ln*n)), n = 2 .. infinity) determine where the following power series converge: sum(n*x^n/(n^2+1), n = 2 .. infinity) (∑)(1.3.5.7...(2n-1))/(3.6.9.12...3n)(x-2)^(n) please