Given f(x)=2x^3-15x^2+22x+15 Find all real zeros
2 answers:
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Discount are used to reduce the costs of items
The percent paid to determine the advertisement is incorrect
<h3>How to determine the correct percentage</h3>The initial prices are given as: $44.00 to $152.00
And the discount is: 45% to 51%
At a discount of 45%, the price of the items would be:
At a discount of 51%, the price of the items would be:
The calculates prices show that the percent paid to determine the advertisement is incorrect
Read more about discounts at:
The equation of the tangent line at x=1 can be written in point-slope form as
... L(x) = f'(1)(x -1) +f(1)
The derivative is ...
... f'(x) = 4x^3 +4x
so the slope of the tangent line is f'(1) = 4+4 = 8.
The value of the function at x=1 is
... f(1) = 1^4 +2·1^2 = 3
So, your linearization is ...
... L(x) = 8(x -1) +3
or
... L(x) = 8x -5
