alphonsobedford7534
16.09.2019 •
Mathematics
Find the slope of the line tangent to the graph of y = 2x3 – 2x + 57 at (–2, 45).
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Ответ:
The slope = 22.
Step-by-step explanation:
First we find the derivative:
y' = 6x^2 - 2
This gives the slope of the line tangent to the point (x, y) on the graph of y.
So for the tangent at (-2, 45) the slope is:
6(-2)^2 - 2 = 24 - 2
= 22.
Ответ:
Given that,
The equation of line is y=7/5x+ 6 and that passes through the point (2,-6).
To find,
The equation of line that is perpendicular to the given line.
Solution,
The given line is :
y=7/5x+ 6
The slope of this line = 7/5
For two perpendicular lines, the product of slopes of two lines is :
Equation will be :
y=-5x/7+ b
Now finding the value of b. As it passes through (2,-6). The equation of line will be :
So, the required equation of line is :
y=-5x/7+ (-32/7)