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fgiga [73]
3 years ago
6

Find the derivative of f(x) = 2x2 + 7x at -3. That is, find f'(-3).

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
5 0

Answer:

Hello,

f'(-3) = -5

Step-by-step explanation:

f'(x) = 4 x + 7

f'(-3) = 4 (-3) + 7 = -12 + 7 = -5

or

f(-3) = 2 (-3)² + 7 (-3) = 18 - 21 = -3

f(-3 + h) = 2 (-3 + h)² + 7 (-3 + h)

= 2 (9 - 6h + h²) - 21 + 7h

= 18 - 12h + 2h²  - 21 + 7h

= 2h² - 5h - 3

( f(-3 + h) - f(-3) ) / h = 2h - 5

f'(-3) = lim h→0 ( f(-3 + h) - f(-3) ) / h = lim h→0 (2h - 5) = -5

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Answer:

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Step-by-step explanation:

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4 0
3 years ago
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In a game, a participant is given three attempts to hit a ball. On each try, she either scores a hit, H, or a miss, M. The game
Sidana [21]

Answer:

chancing for wining is 54%.

Step-by-step explanation:

possible outcomes can be given as

HHH *

HHM *

HMH

MHH *

HMM

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MMH

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Out of those, only 3 will have the participant win the game:

HHH, HHM, MHH.

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since attempts are independant.

Probability (HHH) = 0.9 *0.4 *0.9 = 0.324

Probability (HHM) = 0.9 *0.4 *0.3 = 0.108

Probability (MHH) = 0.3 *0.4 *0.9 = 0.108

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hence, chancing for wining is 54%.

3 0
3 years ago
Find the set of values of k for which the equation 2x2 - 10x + 8 = kx has no real root
Masja [62]

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6 0
3 years ago
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statuscvo [17]

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Step-by-step explanation:

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= 216/11880

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1-(1/55) = 54/55

b)Probability of 2 good units= 2 × 54/(11880)

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8 0
3 years ago
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Nana76 [90]

Answer:

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6 0
3 years ago
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