If h ( x ) =2^x +1 , find the values of the following expressions .
a ) 2h ( -1 ) b ) 4h( -2 )
c ) 2h (-1 ) +4h (-2 ) d ) h (-1 ) +2h (-2 )
F4 Math一問~~~~~
2007-09-30 10:08 pm
回答 (2)
2007-10-01 12:24 am
✔ 最佳答案
a ) 2h ( -1 )=2x(2^(-1)+1)
=2x1.5
=3
b ) 4h( -2 )
=4x(2^(-2)+1)
=5
c ) By a )and b )
2h (-1 ) +4h (-2 )
=3+5
=8
d ) By c)
2x[h (-1 ) +2h (-2 )]=8
h (-1 ) +2h (-2 )=8/2=4
參考: ME
2007-09-30 10:23 pm
a ) 2h ( -1 ) = 2 x0.5 +1 = 2
b ) 4h( -2 ) = 4 x 1/4 +1 =2
c ) 2h (-1 ) +4h (-2 ) = 4
d ) h (-1 ) +2h (-2 ) = 2
b ) 4h( -2 ) = 4 x 1/4 +1 =2
c ) 2h (-1 ) +4h (-2 ) = 4
d ) h (-1 ) +2h (-2 ) = 2
參考: me
收錄日期: 2021-04-30 21:08:15
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