Nikka: b =
4√(2√5−4)2* (4+2
√5)
1/2 = (2
√5−4)
2)
1/4*(2
√5+4)
1/2 =
(2
√5−4)
1/2*(2
√5+4)
1/2 = [(2
√5−4)*(2
√5+4)]
1/2 = 4
1/2 = 2
a = ?
Z tw. zamianie podstaw logarytmu:
| log1003 | | log3 | | 1 | | 1 | | 1 | |
| = ( |
| )* |
| = |
| = |
| |
| log3 | | log100 | | log3 | | log102 | | 2 | |
analogicznie
a = (5
1/2*3
1/2)
2log158 = 15
(1/2)*2log158 = 15
log158 = 8