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Someone help me please I don't know how to do this ! :(

Someone help me please I don't know how to do this ! :(
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5 votes
Someone help me please I don't know how to do this ! :(

Someone help me please I don't know how to do this ! :(-example-1
User Neumann
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1 Answer

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4^(x+1)=21\\ x+1=\log_421\\ x=\log_421-1\\ x=\log_421-\log_44\\ x=\log_4(21)/(4)\\ x=(\ln (21)/(4))/(\ln 4)\approx 1.1962
User Tjfo
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