Answer:
Step-by-step explanation:
To undo the square on the u, you have to take the square root of both sides:
The square root of u-squared is just u, so that's easy. When you take the square root of 49, however, you have to remember that what you get is both the positive and the negative of the square root of 49 which is 7. This is because 7 squared is 49 and so is (-7) squared. So the answer is
u = ±7
Answer:
Domain: -5 x < 1
Range: -4 y < 7
Step-by-step explanation:
The domain is the x-values for which the function exists. It starts off at x=-5, and since the dot is closed it includes it, and finishes at x = 1, where the dot is open.
The range is the y-values for which the function exists. It starts at y= -4, and since the dot is closed there, it includes his value. Then, it finishes at y = 7, where the dot is open meaning it doesn't include it.
See below for the changes when the exponential function is transformed
<h3>How to determine the effect of a</h3>The exponential functions are given as:
An exponential function of the above form is represented as:
See attachment for the graph of the four functions.
<u>When a is large</u>
This is represented by
In this case, the curve of the base form is vertically stretched and it moves closer to the y-axis
<u>When a is small</u>
This is represented by
In this case, the curve of the base form is vertically stretched and it moves away from the x-axis
<u>When a is negative</u>
This is represented by
In this case, the curve of the base form is vertically stretched and is reflected across the y-axis.
Read more about function transformation at:
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