Help with Maths 1A (1 Viewer)

Queenroot

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Don't have solutions to these questions, need to check if I did them right.
Thanks y'all!

 
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A) interchange x and y and then isolate x. I got y inverse = (7x +3)/(5x-8)

B) (tan theta)^-4 using basic 2U log laws

C) again with log laws, subtracting means divide and assuming base 10, x = 10^5

D) 1.50 use calculator or it is the imaginary part of sin
 
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A) interchange x and y and then isolate x. I got y inverse = (7x +3)/(5x-8)

B) (tan theta)^-4 using basic 2U log laws

C) again with log laws, subtracting means divide and assuming base 10, x = 10^5

D) 1.50 use calculator or it is the imaginary part of sin
Got the same, B) also expressed as (cot theta)^4
 

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