4 years ago

What must be true in order for P (A or B) = P(A) + P (B)?

2 answers:

7 0

A and B must be disjoint<span> in order </span>for P (A or B) = P (A) + P (B). I am hoping that this answer has satisfied your query and it will be able to help you, and if you would like, feel free to ask another question.

snow_tiger [21]4 years ago

6 0

For the equation to be true, the events A and B must be mutually exclusive.

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Which expression is equal to the example?

Aloiza [94]

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<u>Step-by-step explanation:</u>

Here we have , expression to evaluate:

$1-(cosx)^4$

⇒ $1-((cosx)^2)^2$

⇒ $1-(1-(sinx)^2)^2$

We know that , $sin^2x = 1-cos^2x$ , putting value in equation $1-(1-(sinx)^2)^2$

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