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Ann [662]
3 years ago
11

Help pleaseeeee I can’t do this and don’t guess don’t do it if you don’t know

Mathematics
1 answer:
algol [13]3 years ago
8 0
The top one (first one)
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100 POINTS <br> Evaluate the derivative of the function number 38
patriot [66]

Answer:

 1/ sqrt(1+ln^2(x))    * 1/(ln^2x +1) * 1/x

Step-by-step explanation:

f(x) = sin (tan^-1 (ln(x)))  

u substitution

       d/du (sin u)  * du /dx

            cos (u) * du/dx

Let u =(tan^-1 (ln(x)))     du/dx =d/dx  (tan^-1 (ln(x)))

v substitution

                                             Let v = ln x                dv/dx = 1/x

                                              d/dv  (tan ^-1 v)  dv/dx

                                                          1/( v^2+1) * dv/dx

                                                        =1/(ln^2x +1) * 1/x

Substituting this back in for  du/dx

cos (tan^-1 (ln(x))  * 1/(ln^2x +1) * 1/x

We know that cos (tan^-1 (a)) = 1/ sqrt(1+a^2)

cos (tan^-1 (ln(x))  * 1/(ln^2x +1) * 1/x

 1/ sqrt(1+ln^2(x))     * 1/(ln^2x +1) * 1/x

                                           

8 0
3 years ago
Read 2 more answers
Arthur bought a life insurance policy at $10.98 per month for a 20 year term. What will he pay over 20 years for the premium?
mrs_skeptik [129]
D is the right answer
3 0
3 years ago
Read 2 more answers
Bens teacher ask him to write a three- digit number that uses the digit 3 once and the digit 6 twice. The value of one 6 needs t
nata0808 [166]
We have three numbers to arrange so that 6 is 1/10 of the value of the other six.

Since position tells us whether we're talking about single, tens, hundreds, thousands (e.g. 25 is two times 10 plus five times 1) we know that the two sixes must be next to each other.

This leaves us with two options.
663 or 366.

In each of these cases the second 6 in the number is one tenth of the first 6.

If we look at the only other option: 636 we see that the second 6 is one hundredth of the value of the first 6.


5 0
3 years ago
What is 9+-234*37^2-38/483
STatiana [176]
37292827 the answer is that
6 0
3 years ago
Read 2 more answers
A painting is purchased for $250. If the value of the painting doubles every 5 years, then
ch4aika [34]
After 5 years, value doubles.
Hence after 5 years, value is 250 x 2 = 500
After another 5 years, value doubles.
500 x 2 = 1000
Ans: $1000
7 0
2 years ago
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