sulik Posted September 9, 2008 Report Share Posted September 9, 2008 1. skaitlis x; 2. skaitlis x - 3; reizinājums x(x-3) = 309; no tā arī sanāk kvadrātvienādojums: x^2 - 3x - 309 = 0; tālāk rēķini pats. Link to comment Share on other sites More sharing options...
Dr. Pain Posted September 9, 2008 Report Share Posted September 9, 2008 Ja nemaldos, tad lg bija log pie bāzes 10? Tātad: 2lg3 = lg3^2 1 = lg10 lg(a) + lg( = lg(a* lg(5- = lg3^2 + lg10 lg(5- = lg9*10 5-x = 90 x = -85 Link to comment Share on other sites More sharing options...
kaamis Posted September 9, 2008 Report Share Posted September 9, 2008 (edited) lg(a) + lg(B ) = lg(a*B ) imo, lga*lgb = lg(a+B ) nu, neko darīt, vilciens ir aizgājis. pajautāšu savam vēstuļu draugam... be, visuvērtais viņu nobanoja. Edited September 9, 2008 by kaamis Link to comment Share on other sites More sharing options...
macho Posted September 9, 2008 Report Share Posted September 9, 2008 nav gan, atver run->calc un paspaidi. Redzēsi ka lg9 + lg10 = ~1.954242 kas ir vienāds ar lg90 Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now