Press the 2nd key, then choose acosh (which is the same as cosh-1)
.
Real part: 2x + y = 4
Imaginary part: x - y = 1
Add these term by term: 3x = 5 so x = 5/3
Put this back into the second equation: 5/3 - y = 1 so y = 5/3 - 1 or y = 2/3
X^2*x^3 → x^5
x^5 = 243 means x = 3
Clearly there is a solution!
geno gave both an exact and an approximate result. The fact that the approximate solution doesn't match the original equation exactly is hardly surprising!
No image!!
See diagram:
You can use the on-line normal probability calculator here: http://stattrek.com/online-calculator/normal.aspx
Enter:
Press Calculate to get:
3!/2 = 3 (6 is double counting).
If momentum is conserved, then:
0.06*0.7 + 0.03*0 = 0.06*(-0.2) + 0.03*v
0.042 = -0.012 + 0.03*v
0.054 = 0.03*v
v = 0.054/0.03
v = 1.8 m/s
+33667 
