Phil O.

Tutor for 4 years, Electrical Engineer

Tutor Satisfaction Guarantee

Calculus

TutorMe

Question:

Verify that the basis to the general solution y1=e^(-5x) and y2=e^(6x) , y''-y'-30y=0

Phil O.

Answer:

To verify basis, the first step is to take the first and second derivative of y1, which will give you 25e^(-5x), and then plug it back into the differential equation, thus 25e^(-5x)-(-5e^(-5x))-30(e^(-5x)) = 0

Calculus

TutorMe

Question:

What is the limit of the function f(x)= sin(2x)/x ?

Phil O.

Answer:

Using the identity lim --> 0 sin(x)/x is equal 1, multiply the function f(x) by 2/2, this in turn becomes 2sin(2x)/(2x), using the identity, sin(2x)/(2x) is equal to 1, thus the only thing left is 2x1 which is 2.

Electrical Engineering

TutorMe

Question:

What is a capacitors' impedance and behavior with a high frequency input signal?

Phil O.

Answer:

With a high frequency AC input signal, the carriers produce an electromagnetic force that allows the signal to pass through, the capacitor acts like a short, thus allowing the signal to pass; which unlike a DC signal, it acts as an open, which blocks the DC signal (zero frequency).

Send a message explaining your

needs and Phil will reply soon.

needs and Phil will reply soon.

Contact Phil

Ready now? Request a lesson.

Start Session

FAQs

What is a lesson?

A lesson is virtual lesson space on our platform where you and a tutor can communicate.
You'll have the option to communicate using video/audio as well as text chat.
You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.

How do I begin a lesson?

If the tutor is currently online, you can click the "Start Session" button above.
If they are offline, you can always send them a message to schedule a lesson.

Who are TutorMe tutors?

Many of our tutors are current college students or recent graduates of top-tier universities
like MIT, Harvard and USC.
TutorMe has thousands of top-quality tutors available to work with you.