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إذا كانت د(س) = س - ٥ ، فإن د(١) = ...

Mathematics

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Answer

-4

Step-by-step solution

3 steps

Here's the solution for the first question:

Question 1: إذا كانت د(س) = س - ٥ ، فإن د(١) = ...
Translation: If f(x)=x−5f(x) = x - 5, then f(1)=...f(1) = ...

  1. Identify the given function.

    The function is:

    f(x)=x−5f(x) = x - 5

  2. Substitute the value x=1x=1 into the function.

    To find f(1)f(1), replace xx with 1:

    f(1)=1−5f(1) = 1 - 5

  3. Calculate the result.

    f(1)=−4f(1) = -4

    The value of f(1)f(1) is:

    −4-4
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