Помогите всее) те которые сможете)

5) log(1\2) {log3 cos pi\6 - log3 sin pi\6) =
= log(1\2) {log3 (cos pi\6 \ sin pi\6)} =
= log(1\2) {log3 (ctg pi\6)} =
= log(1\2) {log3 (V3)} =
= log(1\2) {log3 (3^(1\2))} =
= log(1\2) {1\2 * log3 3} =
= log(1\2) (1\2) = 1

6) log(1\4) {V7-V3} + log(1\4) {V7+V3} =
= log(1\4) {(V7-V3) * (V7+V3)} =
= log(1\4) {7-3} =
= log(1\4) 4 =
= log(1\4) {(1\4)^(-1)} =
= (-1) * log(1\4) 1\4 = -1

7) 2*log2 6 + log2 35\9 - log2 35 =
= log2 6^2 + log2 (35\9 : 35) =
= log2 36 + log2 (1\9) =
= log2 (36 * 1\9) =
= log2 4 = log2 2^2 =
= 2 * log2 2 = 2
Лениво расписывать. Формулы изучай
8) = log4 [1\5 * 36 * (25\81)^(1\2)] =
= log4 [1\5 * 36 * 5\9] =
= log4 4 = 1

10) = 1\2 * log6 (84\4) =
= 1\2 * log6 21

11) = lg (27*12) \ lg (2*3^2) =
= lg 324 \ lg 18 =
= log18 324 =
= log18 (18^2) =
= 2 * log18 18 = 2

13) = log6 [16^(1\4) * (3(1\3))^3] =
= log6 (2*3) =
log6 6 = 1

14) = [lg (300 : 15 : 2)]^(-26) =
= [lg 10]^(-26) =
= 1^(-26) = 1

15) = log14 [49^(1\2) * (4^(1\4))^4] =
= log14 [7 * 4] =
= log14 28 = log14 (14 * 2) =
= log14 14 + log14 2 =
= 1 + 1\log2 14 =
= 1 + 1\(log2 2 + log2 7) =
= 1 + 1\(1+log2 7)

16) log2 log2 log2 {3^(2*log3 4)} =
= log2 log2 log2 {3^(log3 4^2)} =
= log2 log2 log2 {4^2)} =
= log2 log2 log2 {2^4)} =
= log2 log2 {4 * log2 2} =
= log2 log2 4 =
= log2 log2 2^2 =
= log2 (2 * log2 2) =
= log2 2 = 1

сори шея болит

это физика?