- #1
gangsta316
- 30
- 0
Homework Statement
http://tinyurl.com/ylor68h
I'm having trouble with questions 3, 4, 8, 9 & 10.
Homework Equations
The Attempt at a Solution
For 3 I got
(b-dx)/(cx-a)
as the inverse and
[itex] \frac{(x(bc-ad))}{(acx + bc + cdx + d^2)}[/itex]
as the composed function. The bc - ad is there but it's on top of the fraction rather than the bottom so it would not cause the inverse to be undefined.
For 4 I drew the graphs but I can't express f(x) as a single equation.
I got
f(x) = H(x)*a(x) + something
but I don't know what what something is.
Can we do number 8 without using a calculator to find the value of x? And what does it mean that it wants all solutions -- aren't there infinitely many? I've solved the quadratics but I don't know how to get values of x without using a calculator and I don't see what it means by all solutions.
For number 9 I managed to get the double angle formulas, but I have no idea how to get sinA + sinB and cosA + cosB.
For number 10 I managed to put tan x in terms of t but I can't do it for sinx and cosx. I think that I just need a push in the right direction for this one.
Thanks for any help.
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