Find 0th Derivative: To find the Maclaurin polynomial of a function, we need to calculate the derivatives of the function at x=0 up to the degree we are interested in, which is the 4th degree in this case.
Find 1st Derivative: First, let's find the 0th derivative, which is the function itself. For −(1+x)21, when x=0, the value is −(1+0)21=−1.
Find 2nd Derivative: Now, let's find the 1st derivative of −(1+x)21. The derivative is (1+x)32. When x=0, the value is (1+0)32=2.
Find 3rd Derivative: Next, we find the 2nd derivative. The 2nd derivative of (1+x)32 is (1+x)4−6. When x=0, the value is (1+0)4−6=−6.
Find 4th Derivative: We continue with the 3rd derivative. The 3rd derivative of −6/(1+x)4 is 24/(1+x)5. When x=0, the value is 24/(1+0)5=24.
Construct Maclaurin Polynomial: Finally, we find the 4th derivative. The 4th derivative of (1+x)524 is (1+x)6−120. When x=0, the value is (1+0)6−120=−120.
Substitute Values: Now we have all the derivatives at x=0. We can construct the Maclaurin polynomial using the formula:P(x)=f(0)+f′(0)x+2!f′′(0)x2+3!f(0)x3+4!f′(0)x4
Simplify Polynomial: Substituting the values we found into the Maclaurin polynomial formula, we get:P(x)=−1+2x−2!6x2+3!24x3−4!120x4
Simplify Polynomial: Substituting the values we found into the Maclaurin polynomial formula, we get:P(x)=−1+2x−2!6x2+3!24x3−4!120x4Simplify the polynomial by calculating the factorials:P(x)=−1+2x−3x2+4x3−5x4