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2m2m14=02^m-2^{m-1}-4=0ആയാൽ m ൻ്റെ വില കണ്ടെത്തുക

A27

B6

C3

D4

Answer:

C. 3

Read Explanation:

2m2m14=0    2m2m1=42^m-2^{m-1}-4=0 \implies2^m-2^{m-1}=4

2m1(21)=4    2m1=222^{m-1}(2-1)=4\implies2^{m-1}=2^2

m1=2    m=3m-1=2\implies{m=3}

 

 

 

 

 


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