4 is the the ten thousands place
5)B
6)A
7)A
Im not 100% sure about 7 but i believe those are correct
Answer:
b
Step-by-step explanation:
the answer is b, quadratic
f(x)=secx.
f'(x)=sec x tan x.
Use the product rule to find f ' '(x).
F ' '(x)=(secxtanx)tanx+secx(sec2x).
So, f ' '(x)=secxtan2x+sec3x.
Evaluate:f ' '(π4)=sec(π4)tan2(π4)+sec3(π4)=(√2)(1)2+(√2)3=√2+2√2=3√2.
