Solve each of the following equations for
Question 1:
Answer:
Comparing with
, we get
Question 2:
Answer:
Comparing with
, we get
Question 3:
Answer:
Comparing with
, we get
Answer:
or
Comparing with
, we get
Question 5: [2007]
Answer:
Comparing with
, we get
Question 6: [2013]
Answer:
Comparing with
, we get
Question 7:
Answer:
Comparing with
, we get
Question 8:
Answer:
Comparing with
, we get
Question 9:
Answer:
Comparing with
, we get
Question 10:
Answer:
Comparing with
, we get
(imaginary number).
Question 11:
Answer:
Therefore we have
Comparing with
, we get
.
Question 12:
Answer:
Comparing with
, we get
Comparing with
, we get
Comparing with
, we get
Question 13:
Answer:
Comparing with
, we get
Comparing with
, we get
Comparing with
, we get
Answer:
Therefore the equation becomes
or
Comparing with
, we get
When y = 2
Squaring both sides
Similarly, when y = 0.5
Answer:
Answer:
Answer:
[2006]
Answer:
Comparing with
, we get
Question 19: [2012]
Answer:
Comparing with
, we get
If we want only three significant figures than
Question 20: [2014]
Answer:
Comparing with
, we get
If we want only two significant figures than