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What were your grades in math and science?
Math
Calculus
What is gradient?
Probability & Statistics
Hispanic population consists of around 20% and growing.
Of which, 71% voted for Democrats -- last time.
What is the percentage of Hispanic Democrat votes in among all voters?
Geometry
What is the conversion rate between miles and kilometers?
How many nations do you think are using mile instead of kilometer?
Algebra
What is the general formula for the sum of a series?
No, this math does not include the effects of inflation rate changes.
Science
Biology
Why do you think scientific names are important?
Physics
How do you calculate the impact of atomic weapons?
Chemistry
What are isotopes?
How do you think it damages human body?
What do you think was the damages by the atomic bombs?
Geology
What is the importance of the Arctic ice melting?
Isotopes are chemical elements that has the same atomic number and different atomic weight. Many isotopes are radio active. The radiation damages human DNA's. That is why after the atomic bomb dropped and killing more than 100,000 instantly, many continue to die by cancer and other diseases. People are still dying in Russia where the nuke tests affected the people there.
Gradient is the growth rate of some values that changes over some interval. There is a mathematical way to define the rate of the increase.
Which involves the beauty of math. It is defined as the increase divided by the interval.
When you take a very small amount of interval, the gradient can be defined for that interval. Then you take the infinite small amount -- this is where the beauty of math comes in to play -- the gradient can be define at that point.
Now you have the gradient values for all possible values. That is called derivatives.
It purely is mathematical, namely, purely symbolic and abstract, the notion of the infinity is.