ERSA Pickleball: Serving Committee Jan Meeting

    It seems like we keep cussing and discussing the same action items, some quick fixes, others long term projects, without figuring out who will do what when. Those in attendance at yesterday’s January Serving Committee lunch meeting at Round Table Pizza stepped up to take care of all but one of the following agenda items:

    –Finish Painting Lines on Court #3. Audrey and Little Lance will make this happen.

    –Re-Painting Lines. Audrey suggested that Stan should oversee this, since he is the most familiar with taping the lines. Several people need to help with this project before the basketball courts are refinished in March.

    –Net Quick Releases. Little Lance will buy four turnbuckles, which should make it easier to set up and take down the nets.

    –Net Standards Storage. Besides the hassle of attaching and unattaching the nets, it’s a pain to get the pole standards down and to put them away. Brackets need to be mounted on the wall in the storage room so that the nets don’t have to be stored on a tall shelf. I will contact Dale about installing the brackets.

    –Make Improvements on Our Sponsor’s Blog. Sportystation, is a great blog founded by Pierre. We will also write some articles about pickleball. Please check out their The Best Pickleball Paddle Reviews 2017 – Ultimate Guide. We love you Pierre!!!

    –Equipment Storage. The extra balls and wooden paddles are stored in a plastic crate. For safekeeping they need to be moved to a cabinet in Audrey’s office or a locker in the YMCA employee break room. I will take care of this.

    –Design ERSA Logo Larry, Big Lance, and I have discussed this and have come up with some initial ideas and designs, but none of us has seen it through. Big Lance suggested that everyone in our club either design a logo, or if artistically challenged, download one from another club and bring it to the July meeting. Folks, you’ve go homework.

    –Plan Ashland Trip. We can decide on a date, preferably this summer so we can play outdoors, during Marty’s visit on Mon., June 14. Audrey will check on a van, which can hold 10 people.

    –Weekly Beginner’s and Skills Clinic. This has been discussed often. We’re a club, not a clique, so novices should always be welcome to join us without being intimidated by the difference in playing ability. In order to do this, we need a fourth court available on a regular schedule. We can buy another net set-up or continue to wait for the free one to be sent by USAPA.

    In the meantime, I will make myself available on Wednesdays from 9 to 9:30 to initiate new players and to work on skills with anyone of us waiting to get into a game. I will also make a flyer about UVP–who we are and what we are doing so that those who wander over to the courts won’t be left wondering.

    –Outdoor Courts. The consensus is that the first outdoor courts should be near the YMCA. The concrete pad just north of the building is a perfect spot. Approval is needed from the city of Roseburg to use the space for picklevall, to install a fence and permanent nets, and to fund the project. When he visits June 14, Marty can describe how Ashland operates their outdoor courts. This action item is a major task, which is probably why no one has volunteered yet to undertake it.

    –ERSA Mission Statement. Gail and I will write a draft version.Finally, before everyone bussed their barley pop glasses and plates of pizza crust and salad bacon bits, I requested help with the Camp Pickleball for Kids, Mon., Jan 16 through Thurs., Jan 19. Dr. Bill and Gail volunteered, but if 12 kids sign up and all three courts are needed, I could use three volunteers per day.

    Product Rule and Power Rule Derivatives


    Today at online calculus we are going to be checking out two of the most important differentiation rules, the product rule and the power rule. Up until now we have only seen very basic differentiation rules, like the power and exponential rules. It is now time to learn a more complicated rule for differentiating the product or two functions. Keep in mind that you need good graphing calculator for this. You can read the review of the new graphing calculator TI-84 Plus CE from Texas Instruments.

    Product Rule Derivatives

    There are simple rules for taking the derivative of a sum or difference of two functions (the sum and difference rules), but it is slightly more complicated when it comes to multiplication and division. If we want to find the derivative of a functions that consists of two other function multiplied together, we cannot simply take the derivative of each function in the product and multiply them together afterwards.

    This will give a different (and wrong) result. In simple language, the product rule is; the derivative of the first times the second, plus the derivative of the second times the first. So if we have two functions, f(x) and g(x) then;[f(x)g(x)]’= f’(x)g(x) + g’(x)f(x). It is an important rule to memorize as you will be using it a lot in the future.

    For example, someone asks us to find the derivative of the function y = x^2 * e^x. We need to use the product rule to solve this. We will break the problem down into steps to make it easy for ourselves. First, we find the derivative of the first term (x^2) to be 2x using the power rule. We also know the derivative of the second (e^x) is simply e^x (this is that important rule from the previous section).

    So now we take these terms and put them into the product rule.y’ = 2x * e^x + e^x * x^2We can factor this answer but it is not necessary. This is a perfectly acceptable final answer. The product rule is not difficult to use if you break it into specific steps. Find the derivative of the first, the second, and the put them into the product rule.

    Power Rule Derivatives

    Using differentiation rules will greatly simplify the process of  finding a derivative. There are many rules to remember so be sure to practice  them often. The first rule to remember is that the derivative of any  constant is simply 0.

    So if you take the derivative of any number without a  variable, the answer will be 0. Why is that? Well recall that the derivative is  the rate of change of the function. A constant does not change. It is simply a  straight line on a graph, so therefore it will have a zero value derivative for  all of x.

    The power rule is one of the most commonly used rules in  differential calculus. The power rule can be written as; (d/dx)x^n=nx^(n-1). It  is a fairly simple procedure, but be sure to practise it. You simply take the  power of x, and bring it in front of x. Then you subtract one from the power of  x.

    For example the derivate of x^2 is simply 2x. The derivative of x^3 is 3x^2.  See the video for a better explanation of the procedure. Again, for example, someone asks us to find the  derivative of f(x)=sqrt(x^3). Before doing anything we want to simplify this  equation and write the function as f(x)=x^1.5. So now by using the power rule,  we bring the 1.5 out front. Then we subtract 1 from the power. So we are left  with f(x)=1.5x^0.5 which is the same as 1.5*sqrt(x).

    If you are having difficulties with these rules, just remember, practice makes perfect!