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Kryger [21]
3 years ago
8

Tìm x,y thỏa mãn: x^2-2xy+3y-5x+7=0

Mathematics
1 answer:
STALIN [3.7K]3 years ago
7 0

I think there's an error with this question. Mind to check it back and tell me the detail?

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Can someone plz give me the answer for this question?
andreev551 [17]

Answer:

see explanation

Step-by-step explanation:

Given

f(x) = e^{2x} - 4

let f(x) = y

y = e^{2x} - 4

Switch x and y and solve for y, that is

x = e^{2y} - 4 ( add 4 to both sides )

x + 4 = e^{2y}

Take the ln of both sides

ln(x + 4) = ln e^{2y} = 2y ln_{e} = 2y

Divide both sides by 2

y = \frac{ln(x+4)}{2}, that is

f^{-1} (x) = \frac{ln(x+4)}{2}

8 0
3 years ago
Hellohello, if you able to help me then please do. (:
mars1129 [50]

Answer:

exact form: 4/9

decimal form: 0.4 repeating

i hope this helps :)

7 0
3 years ago
Help with geometry. I don’t understand it
ollegr [7]
It’s a 45 if u look at the angle all ur doing is copying the number basically
5 0
4 years ago
Read 2 more answers
Choose the expression that mathematically represents the difference between ‘3 times a number’ and the quantity ‘5 times another
Trava [24]

Answer:

b. 3x - (5y -7)

Step-by-step explanation:

Let x represent "a number". Let y represent "another number."

The "3 times a number" is represented by 3x.

And "5 times another number less 7" is represented by 5y -7.

The difference between these quantities is the second subtracted from the first:

... 3x - (5y -7) . . . . matches selection b.

4 0
4 years ago
Can someone help ? I dont understand this
ZanzabumX [31]

Answer:

4854

Step-by-step explanation:

2=434344=3

[46664792)

7 0
3 years ago
Read 2 more answers
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