Recent content by Student4

y'=sin(x)+2x^4+c y=-cos(x)-2/5x^5+c

Can anyone just help me integrate this 2 times. (with maple or somekind math program, or hand). Need to see if my 2 solutions is correct. :approve:

Stuck on really starting this one :redface:relevant info: Same chapter as L’Hospital’s Rule. Any ideas?

Still abit confused First root z= √(1+i√3) simplifed with polarform and DeMoivre's Theorem: modulus: √(1^2 + √3^2 ) = 2 argument: tan = √3/1 = pi/3 and polarform w=( 2*(cos(pi/3) + i sin(pi/3) )^1/2 ,and then with the theorem i can write: √2 (cos(1/2*pi/3) + i sin(1/2*pi/3)) And then i get...

Homework Statement Use The Formal definition of limits to show Homework Equations The Formal definition of limits The Attempt at a Solution Tried to do it like this, but that was wrong. What do i need to do different?

Hi, dynamicsolo, yes shud know it, but just started my course so I am abit new to polar form. I need to find modulus and argument of the complex number first right?

so; (z²)²-2z²+4=0 and let u=z² u²-2u+4=0 u= 1+i√3 and u= 1-i√3 And i find z z²= 1+i√3 and z²= 1-i√3 z= √(1+i√3), z= -√(1+i√3), z=...

hi spamiam, thanks for fast reply. Could you just show me fast how to get this one down to quadratic, only if you have time ofc. Have done similar equations with substitution, but this spesific one i can't get my head around.

Hi. Homework Statement Find the four roots of: https://www.physicsforums.com/attachment.php?attachmentid=39371&stc=1&d=1317233718 Homework Equations Calculus: p.6 Polynomials and Rational functions The Attempt at a Solution Pretty much stuck on starting it. I can't really find a...