F = t ⇨ df = dt
dg = sec² 2t dt ⇨ g = (1/2) tan 2t
⇔
integral of t sec² 2t dt = (1/2) t tan 2t - (1/2) integral of tan 2t dt
u = 2t ⇨ du = 2 dt
As integral of tan u = - ln (cos (u)), you get :
integral of t sec² 2t dt = (1/4) ln (cos (u)) + (1/2) t tan 2t + constant
integral of t sec² 2t dt = (1/2) t tan 2t + (1/4) ln (cos (2t)) + constant
integral of t sec² 2t dt = (1/4) (2t tan 2t + ln (cos (2t))) + constant ⇦ answer
The passive voice of the sentences will be:
- The dog that comes every night is fed by Mary.
- Iceland's waterfalls are said to be wonderful by people.
- The latest trends in technology are being followed young people.
<h3>What is a passive voice?</h3>
It should be noted that a passive voice simply means a form of verb where the subject undergoes the action of the verb.
In this case, the passive voice is used to emphasize the action. In order to identify the passive voice, one should look at what happened and who was responsible.
Learn more about passive voice on:
brainly.com/question/25897080
Solution:
we are given that
A student has some $1 and $5 bills in his wallet.
Let there x $1 bills and y number of $5 bills.
He has a total of 14 bills that are worth $34.
So we can write
Now solve these two equations together using substitution as follows
Hence there are 9 $1 bills and 5 bills are of $5.
The answer is 103 because it’s in the “middle”
