Evaluate the function $$ f(x)=-x^{2}-1 $$ at the given value of the variable. a. $$ f(2) $$ b. $$ f(-3) $$ a. $$ f(2)=\square $$ (Simplify your answer.) b. $$ f(-3)=\square $$ (Simplify your answer.)

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**a. Evaluating $$ f(x) = -x^2 - 1 $$ at $$ x = 2 $$:**

1. Substitute $$ x = 2 $$:
   $$
   f(2) = -(2)^2 - 1
   $$

2. Compute the square:
   $$
   (2)^2 = 4
   $$

3. Substitute back:
   $$
   f(2) = -4 - 1
   $$

4. Simplify:
   $$
   f(2) = -5
   $$

**b. Evaluating $$ f(x) = -x^2 - 1 $$ at $$ x = -3 $$:**

1. Substitute $$ x = -3 $$:
   $$
   f(-3) = -(-3)^2 - 1
   $$

2. Compute the square:
   $$
   (-3)^2 = 9
   $$

3. Substitute back:
   $$
   f(-3) = -9 - 1
   $$

4. Simplify:
   $$
   f(-3) = -10
   $$

Thus, the answers are:

a. $$ f(2) = -5 $$  
b. $$ f(-3) = -10 $$
a. $$ f(2) = -5 $$ b. $$ f(-3) = -10 $$

Evaluate the function at the given value of the variable.
a.
b.
a. (Simplify your answer.)
b. (Simplify your answer.)

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Evaluate the function at the given value of the variable. a. b. a. (Simplify your answer.) b. (Simplify your answer.)