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klio [65]
3 years ago
6

How to solve sin3x+cos2x+2=0?

Mathematics
2 answers:
harkovskaia [24]3 years ago
3 0
It depends on which field this equation is defined. Here you have some solution for real and the beginning of calculations defined in complex field.

s344n2d4d5 [400]3 years ago
3 0
Hello,

sin (3x)=3sin(x)-4sin^3(x)
cos(2x)=1-2sin²(x)

Thus -4sin ^3(x)-2sin²(x)+3sin(x)+3=0
Lest's assume y=sin (x)

4y^3+2y²-3y-3=0
==>(y-1)(4y²+6y+3)=0
Only one real solution: sin(x)=1==>x=π/2+2kπ
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How do i go about identifying the slope & y-intercept in y = -3/4 x -7?
choli [55]
Y=mx+b the m is your slope. Here the slope would be -3/4. The b is your y-intercept which is -7.
5 0
3 years ago
The value of a vintage car over time is represented by the function V(t)=24,300(1.37)t , where t is the time in years. What is t
Nimfa-mama [501]

Answer:

For the function V(t)=24300(1.37)t, the rate of increase is 37%.  

Step-by-step explanation:

The function represents the value (V) of the car over time (t).  This type of function is exponential growth, which means for each year, the value of the vintage car will increase by a rate of 37%.  Exponential growth functions are represented by the equation f(x)=ab^x, where 'a'=initial value, 'b'=the rate and 'x' represents time.  In this case, our initial value of the car is $24,300 and the rate is 1.37.  A rate of 1.37 indicates that the car will retain its initial value (1) as well as increase be an additional 37 percent (.37) over time.  

7 0
3 years ago
A swimmer swam 0.2 mi at 0.0323 mi per min in waters created by melted sea ice.
77julia77 [94]

Answer:

6.1919504644 minutes

Step-by-step explanation:

time = distance/speed

0.2/0.0323=6.1919504644

6 0
3 years ago
Order 3/8,3/4,1/2,5/6 from least to greatest
klasskru [66]
To solve this, it is easiest to find the least common multiple of the denominators which is 24. Now we can rewrite our fractions.
\frac{3}{8}=\frac{9}{24}
\frac{3}{4}=\frac{18}{24}
\frac{1}{2}=\frac{12}{24}
\frac{5}{6}=\frac{20}{24}

Now these fractions can be put in order:
\frac{9}{24}, \frac{12}{24}, \frac{18}{24}, \frac{20}{24}

Reduce and you have your answer.
\frac{3}{8}, \frac{1}{2}, \frac{3}{4}, \frac{5}{6}
6 0
4 years ago
Read 2 more answers
How do you factor x^2 - 2x - 2 = 0
Maru [420]

Answer:


Step-by-step explanation:Step 1: Use quadratic formula with a=1, b=-2, c=-2.

x=

−b±√b2−4ac

2a

x=

−(−2)±√(−2)2−4(1)(−2)

2(1)

x=

2±√12

2

x=1+√3 or x=1−√3

Answer:

x=1+√3 or x=1−√3


5 0
4 years ago
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