Answer:
Step-by-step explanation:
Answer:
Excluded Value : 3 and -5
Step-by-step explanation:
hello :
Excluded Value : and
the excluded value when : x²+2x-15=0
(
x²+2x+1)-1-15=0
means : (x+1)²-16=0 (x+1)²-4² = 0
by identity : a²-b² =(a-b)(a+b)
(x+1-4)(x+1+4) =0 so : (x-3)(x+5) =0 means : x-3=0 or x+5=0
x=3 or x= -5
Excluded Value : 3 and -5
Answer:
Lim (f(9+h)-f(9))/h as h->0 = 2916
Step-by-step explanation:
f(x)=x⁴
f'(x)
= Lim (f(9+h)-f(9))/h as h->0
= 4x³
At x = 9, f'(x) = f'(9) = 4*9³ =4*729 = 2916
1: Bettina's 60, and Melvina's 20.
2: 4.5 gallons