Arrange `(log)_2 5,(log)_(0. 5)5,(log)_7 5,(log)_3 5` in decreasing order.

f(x)=(x)/(log x)-(log5)/(5) is decreasing in

x=log_(5)3+log_(7)5+log_(9)7

Simplify: 2^((log)_3 5)-5^((log)_3 2)

7^(log_(3)5)+3^(log_(5)7)-5^(log_(3)7)-7^(log_(5)3)

Which of the following are correct? a.(log)_3 19.(log)_(1//7)3.(log)_4 1/7>2 b. (log)_5(1//23) lies between -2&-1 c. If m=4^((log)_4 7)a n d n=(1/9)^(-(log)_3 7)t h e n n=m^4 d. (log)_(sqrt(5))sin(pi/5)dot(log)_(sqrt(sin"pi"/5))5 simplifies to an irrational number

Which of the following are correct? a. (log)_3 19.(log)_(1//7)3.(log)_4 1/7>2 b. (log)_5(1//23) lies between -2 &-1 c. \ If m=4^((log)_4 7)a n d\ n=(1/9)^(-(log)_3 7)t h e n\ n=m^4 d. (log)_(sqrt(5))sin(pi/5)dot(log)_(sqrt(sin(pi/5)))5 simplifies to an irrational number

log((11)/(7))^(5)=5(log11)/(7)

The value of 3^((log)_4 5)-5^((log)_4 3) is

a=log_5 3+log_7 5+log_9 7

The value of 3^((log)_4 5)+4^((log)_5 3)-5^((log)_4 3)-3^((log)_5 4) is- a.0 b. 1 c.2 d. none of these