Answer:
Step-by-step explanation:
The equations are
Substituting the first equation in the second we get
So, the required values are
Answer:
1) Look at the equation. When looking at the problem equation, identify the base (b), exponent (y), and exponential expression (x).
Example: 5 = log4(1024)
b = 4
y = 5
x = 1024
2) Move the exponential expression to one side of the equation. Set the value of your exponential expression, x, to one side of the equal sign.
Example: 1024 = ?
3) Apply the exponent to the base. The value of your base, b, needs to be multiplied by itself by the amount of times indicated by your exponent, y.
Example: 4 * 4 * 4 * 4 * 4 = ?
This could also be written as: 45
4) Rewrite your final answer. You should be able to rewrite the logarithm as an exponential expression now. Verify that your answer is correct by making sure that both sides of the equation are equal.
Example: 45 = 1024
Try multiplying each side of the equation by 7 .
Then you must quickly step to one side, as the
answer jumps off the page at you.
Answer: 
<u>Step-by-step explanation:</u>
To find the tangent, you need to find the derivative with respect to x.
Then substitute x = 1 into the derivative.
Given: 0 = 2x² - xy - y²
Derivative: 0 = 4x - y' - 2yy'
Solve for y': 2yy' + y' = 4x
y'(2y + 1) = 4x
