## logarithms – How to calculate compound interest annually?

I have some difficulty understanding this topic of interest rates.

For example, if I invest 1 dollar at a continuous compound rate of 11%, my end-of-year value is 0.11 e = 1.116 dollars. From there, it is stated that investing at 11% per year without interruption corresponds to an investment of 11.6% per year.

Now, where does this 11.6 come from? Does it come from the value of 1. (116) dollars? So, I just take the 0.116 decimal and turn it into a percentage?

Another question that I have concerns this problem:

Suppose the compound annual rate is 18.5%. The current value of a $$100 USD in perpetuity, with each cash flow received at the end of the year, is 100 / 0.185 =$$540.54. If the cash flow is received continuously, we must divide \$ 100 by 17% because 17% compounded continuously equals 18.5% compounded annually (stating that e = 0.17 = 1.185).

What is the relationship between the annual compound rate and the permanently compounded rate? How to use one to calculate the other? I am very confused.

## ssh – Does Pageant voluntarily apply a compound password to a few keys in a row?

In another thread, I asked a question about passwords and its mechanism to avoid being compromised in case of large amount of data example – https://unix.stackexchange.com/questions/ 500845 / is-using-the-one-passphrase-for-many-safes

What brought me here is Pageant, which recalls the secret phrase entered on one key and applies it to the other key. So, if I have two keys with the same passphrase in Pageant, I have to enter the passphrase once – is this the desired behavior?

## google sheets – compound interest, current value

How can I calculate the present value of a sum deposited in a past date, with a fixed interest rate.

For example, if \$ 1,000 was deposited on 1/1/2000 in an account that pays an annual rate of 3%, what would be their value today?

Looking for a formula that can be used in Google Sheets of Excel

## construction of the function – Obtaining a non-zero output of all parts of a compound expression

I decided to post this question and this personal answer as this could be helpful to other people wishing to do the same thing.

I was wondering how to get a non-zero output of all parts of a compound expression. By default, only the result of the last part of a compound expression is generated, for example:

``````fun1[expr_] : = (expr + x; expr + y; expr + z)
fun1[a]
``````

a + z

``````fun1p: = (# + x; # + y; # + z) &
fun1p[a]
``````

a + z

We could use Print (or Echo) …

``````fun2[expr_] : = (Print[expr + x]; Impression[expr + y]; Impression[expr + z])
out2 = fun2[a]
``````

a + x

a + y

a + z

… but the output has Null content:

``````out2
``````

(no output)

The same result is obtained using Print with a pure function.

There are workarounds, but sometimes I find it very convenient to get the outputs directly.

NOTE: There is no duplication of compound statements and previous results returned in parentheses () because the PO was trying to print the results (which displays the results, but the content is Null), whereas I (as explained above) want to: actually get the results (such as I can assign them to variables).

## output format – Combination of pure functions containing compound expressions

For display, I sometimes find it desirable to undo the canonical order of the Mathematica variables and to make it display the terms in the order in which I type them. For example, instead of this:

``````b-a
v = v0 + t
a8 + a9 + a10
``````

-A + b

a t + v0

a10 + a8 + a9

… I would prefer this:

b – a

v0 + t

a8 + a9 + a10

This can be easily accomplished by removing the Orderless attributes from Plus and Times, entering the expression, and immediately restoring these attributes (it is important to do so because their absence alters the basic functionality; for example, without Orderless, Plus does not work, recognize that a + b is mathematically identical to b + a).

``````ClearAttributes[Plus, Orderless]
ClearAttributes[Times, Orderless]
c (b-a)
SetAttributes[Plus, Orderless]
SetAttributes[Times, Orderless]
``````

c (b – a)

How can I implement the above as a function? That is, I would like to define a function such as:

``````func[c (b-a)]
c (b-a) (* confirms that Orderless is restored on both Plus and Times *)
``````

c (b – a)

(-A + b) c

Up to now, I have managed only the following, which allows to obtain the desired result, but requires that I enter a function, then the expression, then another function:

``````func1: = (ClearAttributes[Plus, Orderless]; ClearAttributes[Times, Orderless]) &;
func2: = (SetAttributes[Plus, Orderless]; SetAttributes[Times, Orderless]) &;
func1[_]; c (b-a)
func2[_]
c (b-a)
``````

c (b – a)

(-A + b) c

How do I combine them into one function that takes expression as an argument?

EDIT: Note that I only want to change the display format, not any other feature. For example, the MMA should always recognize that e1 and e2 are mathematically equivalent:

``````func1[_]
e1 = c (b - a)
e2 = (-a + b) c
func2[_]
e1 == e2
``````

c (b – a)

(-a + b) c

True

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## java – Is a setter with a compound object as a parameter a better parameter or separate parameters for each parameter of the compound object?

I have two ideas on how to proceed with an availability class, but I'm not sure which one is the best.

``````Public class TimeRange {
private time stamp startTime;
private endTime timestamp;

public TimeRange () {
// set default values
}
// appropriate getters
// setters
public void setStartTime (Timestamp startTime) {
this.startTime = startTime;
}

public void setEndTime (Timestamp endTime) {
this.endTime = endTime;
}
// a code that validates the object is in a valid state.
}
``````

First idea:

``````public class WeeklyAvailabilities {
private TimeRange mondaySlot;
private TimeRange tuesdaySlot;
Private TimeRange Wednesday to Wednesday;
private TimeRange thursdaySlot;
private TimeRange fridaySlot;
private TimeRange saturdaySlot;
private TimeRange sundaySlot;

public WeeklyAvailabilities () {
// set default values
}
// getters and others
public void setMondayStartTime (Start timestamp) {
mondaySlot.setStartTime (start);
}

public void setMondayEndTime (end of timestamp) {
mondaySlot.setEndTime (end);
}
// continue the pattern for all slots
}
``````

Second idea:

``````public class WeeklyAvailabilities {
private TimeRange mondaySlot;
private TimeRange tuesdaySlot;
Private TimeRange Wednesday to Wednesday;
private TimeRange thursdaySlot;
private TimeRange fridaySlot;
private TimeRange saturdaySlot;
private TimeRange sundaySlot;

public WeeklyAvailabilities () {
// set default values
}
// getters and others
public void setMondaySlot (TimeRange mondaySlot) {
this.mondaySlot = mondayaySlot;
}

// continue the pattern for all slots
}
``````

I am in conflict because the first idea does not require the creation of a new object each time, while the second idea would require something of that kind. Really, I wondered if I could know which one is the best or if there could be a third option that I completely ignore.

## python – First solver giving compound numbers

``````prime numbers =[2]
a = 3
b = 0
while true:
try:
if a first%[b]== 0:
a + = 1
other:
b + = 1
except IndexError:
print a
a + = 2
b = 1
``````

I'm trying to run this code to give me a list of prime numbers, but it spits out numbers such as 16, 27, 95 and other larger compound numbers. The code is executed and no syntax error prevents it from doing so, but it will give me incorrect values ​​and I do not know why. Please let me know if you find any errors or if there is a problem with Python3.