This problem can also be done without resorting to complex numbers. Complete the square on the denominator: s2 + 2s + 5 = (s+1)2 + 4 Since the denominator is now expressed in terms of s+1, express the numerator...

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My name is David U., but many just know me as Dave the Math Tutor. I've been a professional math tutor for over 30 years, and I can help you make sense of anything mathematical, from elementary arithmetic to pre-algebra, algebra, geometry, trigonometry, pre-calculus, calculus, differential equations, linear algebra, statistics, probability, number theory, and more, including test prep for tests like the ACT, SAT, CBEST, CSET, GMAT, and GRE. With me you can learn to master the basics, then bump your grade up a notch by learning the shortcuts to take, the pitfalls to avoid, and the special tricks that can make your work quicker, easier, and less prone to error.

I have a B.A. in Math and a wealth of experience working with students of all ages and levels. My students often tell me they appreciate my broad knowledge, my enthusiasm and love of math, my clear and straightforward explanations of mathematical concepts, and my patience and good humor. I'm available days, evenings, and weekends, and I'd love to help you master math.

My rates are reasonable but not low; you can easily find cheaper math tutors. Finding a better tutor, though, would not be so easy! So when quality is more of an issue than price, get in touch with me and find out just how helpful a top-notch tutor can be. I look forward to working with you.

David is a great Math tutor. He is gifted in the area of Mathematics and is able to clearly explain concepts to those of us who aren't.

Thanks, Teresa! Always a pleasure working with you.

I have met with David for two sessions so far. I am currently struggling in my first Calculus course and he has been a monumental help in first pinpointing my strengths and weaknesses, and then helping me work on exactly what I need for improvement. He immediately noticed that my issues with math stemmed not from Calculus, but from my core algebra skills which he got to helping me with right away. He is incredibly easy to work with; his space is quiet and easy to concentrate in, and, so far, each time I've left I've felt better about what I was working on than before. I look forward to working with him again in the future!

David really knows calculus, and he has been able to clarify for my daughter exactly where she is making mistakes, and what she needs to be careful of. Definitely worth the investment- my kid would not be spending her Friday afternoons getting pre-calc tutoring if she did not feel like it was really helping her.

Thanks, Teruko! Your daughter is a very sharp student - the kind who's not satisfied with memorizing formulas, but works to understand them on a gut level. Working with her is a pleasure!

David is a great tutor. I think I threw him a curveball with Discrete Math, but he was excited and picked it up like riding a bike. He definitely knows his stuff. He is very respectful and not pushy at all. I could have been more prepared, but we just opened up the book and started getting to work. I recommend David, no problems!

Thanks, Mike, for your kind words. You're a nice guy too!

This was my third session from Dave and he has been an amazing help with my calculus. He has also gone above and beyond to give me a few other tips on some of my other subjects. Thanks Dave!

We did calculus 2, and it was a tough subject and he taught me very well with a few tricks and I passed my exam with flying colors. HIGHLY RECOMMENDED, WORKS WELL with you to understand it.

Thanks, Joe, I couldn't have done it without you!

Dave has worked with my high school Senior for the last few months preparing him for the standardized tests. Dave has focused on the strategies in all the Math concepts that were long forgotten and really helped him in the Tests. Dave responds better by phone (no Texting) than computer in the end. He's very patient, on time and really knows his material through Calculus.

Thanks, Vicki! Working with Alex has been a pleasure.

Math:

ACT Math, Algebra 1, Algebra 2, Calculus,
Differential Equations,
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General Computer
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GMAT, GRE
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Algebra 1, Algebra 2, Calculus, Geometry, Prealgebra, Precalculus, SAT Math, Statistics
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The CBEST is an exam that's not very difficult. The math it requires is mostly just standard algebra and geometry. Any decent math tutor is sufficiently knowledgeable to tutor for this test.

In my case, I have 30 years of experience in tutoring not only algebra and geometry, but also trigonometry, calculus, differential equations, statistics, number theory, and more. I have also tutored specifically for the CBEST on a number of occasions. I am highly qualified to tutor students needing help in preparing for the CBEST exam.

I look at differential equations as a game, and that's how I teach it: This is the objective, these are the rules, here are some helpful tricks you can use. This approach certainly worked well for me in my own studies; when I took a course in differential equations on my way to earning the degree I hold (a B.A. in Math), I understood the material so well that I scored 100% on every exam, including the final.

Likewise this way of looking at differential equations seems to have worked well for the dozens of differential equations students I have tutored over the past 25 years. A good many of them have enjoyed excellent outcomes, mastering the material well and achieving high grades in their courses.

It worked for them, and it can work for you too. Treating differential equations as a game makes it fun and easy!

Discrete math includes topics such as summation with sigma notation, mathematical induction (both weak and strong), combinatorics, and graph theory. These are all subjects I have studied extensively in a variety of settings: in courses I took on the way to receiving my bachelor's degree in math, in my work over the past 30+ years tutoring students who were dealing with these topics in their courses, and privately just for my own pleasure. I have already enjoyed considerable success tutoring these topics outside the WyzAnt system, and I am eminently qualified to pursue these topics with WyzAnt students as well.

A linear algebra course typically begins by considering matrices as a tool for solving systems of linear equations, which is a fairly mechanical process, and then progresses to the very abstract realm of vector spaces, in which a "vector" need not involve numbers at all, and "addition" and "multiplication" may be defined as something completely different from the familiar arithmetic operations we've used all our lives. Working with this latter type of problem requires thinking outside the box. That's something I'm good at, which is why I was able to sail through the three Linear Algebra courses I took on the way to obtaining my B.A. in Math, earning A's in all three of them. I've had a good deal of success as well in helping my own Linear Algebra students master these skills, during the 25 years or so that I've included that subject in my work as a professional math tutor.

Both aspects of Linear Algebra, the more mechanical operations and the more abstract problems, are important. Both by my academic training and through my accumulated experience as a tutor, I am well qualified to help students achieve mastery in this fascinating yet sometimes challenging subject.

I have been a professional math tutor for more than 30 years, and in that time I have tutored a number of students in the area of Symbolic Logic; currently I am in the process of writing an Introduction to Symbolic Logic. Logic has always come very naturally to me; I began studying it when I was 12 years old (which was a long time ago!). In the course of pursuing my bachelor's degree in Mathematics, I took (and earned A's in) two separate courses in Logic, one offered by the Math department and the other by the Philosophy department.

Some of the topics covered in those courses were: Logical statements and truth values; negation; conjunction, disjunction, and implication; truth tables; De Morgan's Laws; syllogisms; conditional statements and the inverse, converse, and contrapositive; proof by contradiction (a/k/a indirect proof, reductio ad absurdum); logical equivalence and the biconditional; proof via truth tables; tautology; contradiction; and paradox (including the Liar Paradox and Russell's Paradox). I am well qualified to teach all these topics, and more.

Tutors have the ability to create educational resources and share them with the WyzAnt community. Here are some of the resources created by David. View all of David’s resources

Find the inverse Laplace transform? (answer)

This problem can also be done without resorting to complex numbers. Complete the square on the denominator: s2 + 2s + 5 = (s+1)2 + 4 Since the denominator is now expressed in terms of s+1, express the numerator...

Both of the previous answers give the result as 4%. However, that's the percentage of the cake that has been eaten. The question asks what percentage of the cake is left, which is the remaining 96%.

dividing decimals (answer)

I don't see any reason to do this in decimal form. Like many fraction problems, it's done most easily as a common fraction. Begin by putting the .21 over the .33. Now you have .21/.33. Get rid of the decimals by multiplying by 100/100. that gives you 21/33. ...

**Great tutor.** —
David is a great Math tutor. He is gifted in the area of Mathematics and is able to clearly explain concepts to those of us who aren't.
...

Standard Hourly Fee: $40.00

Cancellation: 24 hours notice required

*My listed rate of $40/hour assumes that you will travel to me (near Sac City College). If you prefer I can travel to you, anywhere within Sacramento and nearby suburbs; the rate for that is $50/hour.*

David will travel within 10 miles of Sacramento, CA 95818.

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