Recent content by rocomath

  1. rocomath

    Annihilator of Subspaces in Finite-Dimensional Vector Spaces

    I HATE THE ANNIHILATOR! I completely skipped that problem on my Final :) Still got a B+, thank goodness!
  2. rocomath

    Solving ODE Separable Equations with Cs

    Also, I don't see where you've typed out your last question. Kind of confusing me as well. Maybe this will help. e^(x+y)=e^x e^y
  3. rocomath

    Solving ODE Separable Equations with Cs

    When you integrate both sides, you get C1 on the y side & C2 on the x side. You can combine them, to make C2-C1=C leaving it on the x side.
  4. rocomath

    Integration (by parts)

    1+9t^2 Dividing by 9, \sqrt{9\left(\frac 1 9+t^2\right)}=3\sqrt{\frac 1 9+t^2} t=\frac 1 3\tan\theta
  5. rocomath

    Integration (by parts)

    OMG! I'm so sorry ... lol First, you have to simplify it ... to find what your "a" should be.
  6. rocomath

    Integration (by parts)

    t=3\tan\theta
  7. rocomath

    Integration (by parts)

    Can you use trig-sub or are you required to solve it by int. by parts?
  8. rocomath

    Help with Derivatives of Cubic Root Function

    How do you re-write the cuberoot in exponent form? I think that's what's messing you up.
  9. rocomath

    Adv. Linear Algebra: Review Topics Chapter 1

    Here is the link to my review topics for exam 1. http://math.uh.edu/~bgb/Courses/Math4377/Math4377-Ex1-Topics.pdf 1.2 Does the solution set to a linear system change under elementary row operations? The solution set does not change under elementary row operations. What are independent/free...
  10. rocomath

    Initial Value Problem Question - Differential Equations

    Oh crap it is ... lol, just divide the right and get dt on the right ... sorry!
  11. rocomath

    Initial Value Problem Question - Differential Equations

    Well you can't easily integrate this problem, so you will need to use the integrator factor.
  12. rocomath

    Initial Value Problem Question - Differential Equations

    \frac{dy}{dt}=3-5y^{\frac 1 2} Correct? If so, have you learned these 2 methods: Integrating factor or Variation of parameters?
  13. rocomath

    Can Calculus be Simplified for Easier Understanding?

    Read your book and do all the examples till your head explodes.
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