146 day 10
November 03, 2014
domain: x not equal 3/8
Solve for x: Switch x & y
y = 5x
8x­3
(8x­3)y = 5x
8xy­3y = 5x
y­1 = ­3x
5 ­ 8x
­3y = 5x ­ 8xy
domain: x not 5/8
­3y = x (5­8y)
range: x not equal 3/8
x = ­3y
5­8y
146 day 10
November 03, 2014
domain: [2,inf) Range:[1,inf)
solve for x
y = sqr(x­2)+1
y ­ 1 = sqr(x­2)
( y ­ 1) 2 = x ­ 2
( y ­ 1) 2 +2= x switch x & y
( x ­ 1) 2 + 2 = y­1
domain: [1,inf) 146 day 10
November 03, 2014
starts at (2,1)
x
(fog)(x) =x
x
range:
x
x
146 day 10
November 03, 2014
146 day 10
November 03, 2014
VA: (x+2)=0 at x = ­2
146 day 10
November 03, 2014
Q = 1900
.2*1900=380
1900 ­ 380 ­380 ­380 ­380 = 380
4 years 1900*.80 = 1520
1900*.80^x=400
1520*.80 = 1216
.8^x = 4/19
x=log.8(4/19)
x= ln(4/19)/ln(.8)
= 6.98... so 7
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in degrees
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