Answer:
The law of energy conservation is supported by the mathematical theory known as Mass-Energy Equivalence. This was developed by Albert Einstein.
You could do it as if they were fractions
.4 equals 4/10 which equals 2/5
.25 equals 25/100 which equals 1/4
2/5 times 1/4 equals 2/20
2/20 equals 1/10
1/10 equals .1
.1 is correct
You could also multiply decimals like this:
1.Multiply them together like full numbers
4 times 25 equals 100
2.Move the decimal in three times because the decimal .4 is moved in once and .25 is moved in twice so when you add them you get three
The answer would be .1 or .100 (it doesn't make a difference because you cross out any zeros at the end of a decimal Ex: .12300 equals .123 but .123001 stays .123001)
Answer:
The approximation by Taylor series of f'(3) is 9.5000.
Step-by-step explanation:
Taking the two first terms for Taylor series gives the following expression:

Where e represents the error of the approximation and in this case is of second order. For this particular example, it is no required to calculate.
Note that in the equation x is the independent variable, in contrast, xo is the value where all the derivatives of the function are calculated and must be defined. Observe that the value for the first derivative in x equal 3 is wanted to know, so xo will be equal 3.
Now to find f'(3) will use the rest of the information that was given:
f(5)=28 (x=5)
Replacing the previous values in the Taylor expansion:


Solving the equation:



There was no rounding in the calculated value.