Question: Need help explaining all 4 of these step by step 4.3 Use the First Derivative Test to determine if the function contains a maximum, minimum

Need help explaining all 4 of these step by step

4.3 Use the First Derivative Test to determine if the function contains a maximum, minimum or neither at each critical point. 3. f(x) = 2x2 + x-3 4 x + 1 4. f (x) =2x3- 2x 5x2 -5x+1 4.4 Use the Second Derivative test to determine if the function contains a maximum, minimum, or neither at each critical point. 5. f(x) =3x4 -2x3 -9x2+12 12x316 *#- 18x 6. f(x) = In(x2 +1) In = 1
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