Ah... simple algebra, a time I wish I could return to.
What you want to do first, is distribute that 2 into 4u-5 and get...
8u - 10 = 70
Add ten to both sides:
8u = 80
Divide 8 on both sides:
u = 10
Same here. But what else could us minorities do?
Which one do you want solved?
l'm not familiar with some symbols in the first part.
Here's the second part though :D
\((pi)^18)^(1/2)/2 = 14904.549666723105
You really don't want to help. l'm pondering on dropping my class due to the difficulty of this segement. My love for math has died.
lf you want to rationalize that... just do a sweet move (something my teacher calls this method):
Just multiply the numerator and denominator by the denominator over the denominator (otherwise just 1)
\(1/\sqrt2513*(\sqrt2513/\sqrt2513)\)
Your result:
\(\sqrt2513/2513\)
136000(1+0.055)^5 = 177746.560871675
There's a calculator here for a reason.
Anyways what you have so far is pretty good. Derivatives by the definiton are a bit of a pain l'd rather not go back to.
The 11 came from x = 4 and f(4).
All that means is you plug in four for x into that funciton you were given.
f(4) = 2(4)+3
See?
Anymore questions? Just ask! (Not like l'm doing anything other than tearing my hair out from slope fields and Euler's method.)
