3 years ago

Find f '(-3), if f(x) = (2x2 - 7x

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

8 0

Answer:

f'(- 3) = - 19

Step-by-step explanation:

Differentiate using the power rule

$\frac{d}{dx}$ (a $x^{n}$ ) = na $x^{n-1}$

Given

f(x) = 2x² - 7x, then

f'(x) = 4x - 7 and

f'(- 3) = 4(- 3) - 7 = - 12 - 7 = - 19

You might be interested in

What is the inverse one to one function of f(x) = square root of x-2???

alexira [117]

$f(x) = \sqrt{x - 2} \\y = \sqrt{x - 2} \\y^{2} = (\sqrt{x - 2})^{2} \\y^{2} = x - 2 \\x^{2} = y - 2 \\x^{2} + 2 = y \\x^{2} + 2 = f^{-1}(x)$

6 0

3 years ago

I need help finding the are of this

Allisa [31]

Answer:

78.5

Step-by-step explanation:

3.14*5*5=78.5

3 0

3 years ago

An airplane captain must have a minimum of 1500 hours of<br> flying experience. Tom has 715.

MatroZZZ [7]

Answer:

He needs 785 more minutes

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Expression that is equivalent to 27e+24

Goryan [66]

Answer:

3(9e + 8)

Step-by-step explanation:

the highest common factor is 3 so factor it out.

3 0

2 years ago

Read 2 more answers

Assume y varies directly with x. when y=2 2/3 when x=1/4, what is y when x=1 1/8? NEED HELP QUICK!!

snow_tiger [21]

3y=8x

Explanation:

If y varies directly with x then

y=c⋅x for some constant of variation c

If (x,y)=(14,23) is a solution to this equation, then

23=c⋅14

→c=23⋅41=83

y=83x

or (clearing the fraction)

3y=8x

7 0

3 years ago