Here are 5 things you should know.
1. Nutritious free meals are available for children and teens 18 and younger at many locations throughout USA throughout the summer while school is out of session.
The Summer Food Service Program (SFSP) ensures that low-income children continue to receive nutritious meals when school is not in session. This summer, USDA plans to serve more than 200 million free meals to children 18 years and under at approved SFSP sites. https://www.fns.usda.gov/summerfoodrocks
2. If the corner of your mouth is cracking you probably have a fungal or bacterial infection.
It is called Angular Cheilitis. It can be caused by candida fungi or staph bacteria and will go away much faster if treated with antibacterial or an antifungal.
3. The Windows volume control app EarTrumpet.
EarTrumpet is extraordinarily simple and effective. It allows you to control the master volume of any application running on your Windows machine including those that Volume Mixer tends to ignore. It is easily accessible in the system tray and saves all volume settings.
4. When you Pay with PayPal you will get Free Return Shipping.
- Get the Paypal free return benefit when paying for items with Paypal.
- Paypal will reimburse the cost of up to 12 returns over the course of the calendar. Max $30 reimbursement for each return.
5. You can find roots of any order (3rd, 4th and higher) equation with just a basic scientific calculator, by using Newton’s method.
So, even if your scientific calculator doesn’t have a built-in third order equation mode, you can calculate it yourself. This trick also works for higher order equations. The method used is called Newton’s method (Newton’s iteration).
1. First, you enter your approximation of the root, the closer the better, and you press the = button. The closer the approximation, the faster you’ll find the solution.
2. Then, you write the following expression:
Ans – f(x)/f'(x), where x=Ans
For the non-mathematicians there, f’ is the derivative of a function/polynomial. Basically, you just swap every K * xnwith n * K * xn-1. For the polynomial
Ax3 + Bx2 + Cx + D =0
the expression looks like this:
Ans – (A*Ans3 + B*Ans2 + C*Ans + D)/(3A*Ans2 + 2B*Ans + C)
3. When you’ve entered the expression, spam that = button. Once the result has stoped changing, you have found a root of the equation.
3x5 + 2x2 + 1 = 0
- 5 (=)
- Ans – (3*Ans5 + 2*Ans2 + 1)/(5*3*Ans4 + 2*2*Ans)
- Repeat Step 2 until the result doesn’t change.