Question: Hi, i need the solution codes of bellow question in R. Thanks in advance :) 4. Consider the daily stock returns American Express (AXP) from

Hi, i need the solution codes of bellow question in R. Thanks in advance :)

4. Consider the daily stock returns American Express (AXP) from January 1, 2017 to September 2, 2020.

************The data can be obtained through "quantmod" package in R using symbol ^GSPC.************

a) Build GARCH models for AXP log returns

b) Write down the model.

c) Check the model. Draw your conclusion.

d) Obtain the innovations graph.

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