07/13/13

Is differential geometry pure math?
Is this course pure math? Is it college math or graduate level math? Do physics and engineering majors need this course? What's the name of the textbook for this course that MIT uses?
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07/10/13

Can I get private student loans?
I'm currently undocumented but will soon get legal status with DACA and my SSN. But can I get private student loans without going to college but self-study the college courses at home? I have my... more
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07/10/13

Solve the initial value problem?
Solve the initial value problem y'=-y/2+t, y(0)=0 by the method of successive approximations.
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07/10/13

Solve the differential equation?
Solve the differential equation e^x dx+(e^x cot(y)+2y csc(y))dy=0. M=e^x N=e^x cot(y)+2y csc(y) My=0 Nx=e^x cot(y) Obviously isn't exact. What to do next?
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07/10/13

Solve the initial value problem?
Solve the initial value problem y'=2t(1+y), y(0)=0 by the method of successive approximations.
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07/09/13

a ball is thrown straight up with an initial velocity of 25ft per second from the top of a building 200 feet tall. When does the ball pass pass the roof on its
I need help with quadratic formulas.
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07/09/13

Hard Math Question - stuck, please help.
can you please help me prove this:   If a1.a2.a3...an=1 and n>=3, the prove that: (1+a1)1(1+a2)2....(1+an)n>nn
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07/05/13

Find the equilibrium points?
Find the equilibrium points of dy/dt=y(y-1)(y-2), yo≥0.
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07/05/13

Find the equilibrium points?
Find the equilibrium points of dy/dt=ay+by^2, a>0, b>0, yo≥0.
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07/04/13

Uniform Motion
A commuter bus takes 2 hours to get downtown; an express bus,averaging 25 mph faster, takes 45 minutes to cover the same route, What is the average speed for the commuter bus?
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07/04/13

Please find this integral?
∫ (e^-t)(1+3sin(t)) dt
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07/03/13

If you were a pharmaceutical researcher, why would you want to learn the three dimensional shapes of naturally occurring signaling molecules?
i understand that biological molecules can bind to each other forming the weak bonds and that they can mimic other molecules  but I don't see the importance In the 3D shapes 
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07/02/13

Find the value of yo?
Find the value of yo for which the solution of the initial value problem y'-y=1+3sin(t), y(0)=yo remains finite as t approaches to positive infinity.
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06/30/13

Find the coordinates?
Consider the initial value problem: y'+(1/2)y=2cos(t), y(0)=-1. Find the coordinates of the first local maximum point of the solution for t>0.
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06/27/13

Find the natural frequency?
For the system u"+3u=4sin(ωt), find the natural frequency, the value of ω that produces resonance and a value of ω that produces beats. natural frequency=sqrt(3) How do I find the beats?
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06/25/13

How to self-study physics and electrical engineering without going to college?
How to self-study physics and electrical engineering without going to college? You can buy used textbooks and study it and when you're stucked, can you go to the nearest college and get tutored?... more
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06/23/13

Find the general solution?
Find the general solution of u"+2u'+u=25 sin(t). r^2+2r+1=(r+1)^2 r=-1 u=A sin(t)+B cos(t) 25 sin(t)= -A sin(t)-B cos(t)+2(A cos(t)-B sin(t))+A sin(t)+B cos(t) = -A sin(t)-B cos(t)+2A... more
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06/19/13

Polynomials – operations, factoring, solving equations, applications
Identify a real world application of this concept Describe a problem on a concept that you found difficult to solve, and want the classmates to help you with.
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06/18/13

Help me with Differential Equations?
Solve the differential equation y"+4y=0. r^2+4=0   r=2i, -2i Now what?
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06/16/13

Solve the differential equation?
Solve the differential equation (2xy+y^3)dx+(x^2+3xy^2-2y)dy=0. I got x^2*y+xy^3+yx^2+xy^3-y^2=C but that's not the answer. And is Differential Equations taught after Linear Algebra? If so, then... more
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06/15/13

In your own words, explain the concept of mathematical sequences.
Why is the concept of sequences important in real life? What is the differencebetween a finite and an infinite sequence? What is the difference between anarithmetic and geometric sequence? Give the... more
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06/14/13

Compute the line integral?
Compute the line integral xy dx+(x-y)dy where c is the line segment from (1, 0) to (3, 1).
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06/11/13

1/2x-2y=4 please help
1/2x-2y=4 please help  with step by step instructions
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06/11/13

A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn at random, one at a time and without replacement. What is the probabili
probability 
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06/08/13

How many years will it take scientists to invent teleportation device?
How many years will it take scientists to invent teleportation device from now on? And how much money can the person earn by inventing this? Can someone do experiments for this in a laboratory by... more
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