It is odd all right. First of all if it is h(t), why is it written with x and no t on the right? The whole thing is a typo.
The -x^2 term means it will sink, not rise, as x gets large. That is why your average speed comes out negative.
4 x^2 -3 x + 2
8 x^2 + 5 x -11
as x gets big, the x^2 terms are much bigger than the terms in x and the constants so
------ = 1/2
2^2x - 4 (2^x) + 3 = 0
The trick is to see that:
2^2x = (2^x)^2
so say y = 2^x
and we have
y^2 - 4 y +3 = 0
y = 3 or y = 1
so 2^x = 3 or 2^x = 1
x log 2 = log 3 or x log 2 = log 1
x =.477/.301 or x = 0
Answer this Question
Math - 1) A helium balloon is rising according to the function H(t) = -7x^2 + 5x...
ALGEBRA - A catapult launches a boulder with an upward velocity of 92 m/s. The ...
Math - A water balloon is shot into the air so that its height h, in metres, ...
physics - A large balloon of mass 237 kg is filled with helium gas until its ...
PHYSICS - A large balloon of mass 237 kg is filled with helium gas until its ...
Math - the function is h(t)= -4.9t^2+2t+45 (t represents time in seconds and h ...
physics - A helium balloon has a mass of 0.022 kg, which includes both the ...
Math - I don't get either of these equations. Please help me out! 1. Music Mart ...
Pre-Calculus - The surface ares S (in square meters) of a hot air ballon is ...
math - A water balloon is shot into the air so that its height h, in metres, ...