maclaurin

[faint viper]

so in this q im tryin to find expansion of cos(sinx) using the expansions of both, so substituting expansion of sinx into expansion of cosx, only focusing on terms in x^6 or lower. i understand how theyve done the first bracket and last bracket but how did they choose the right terms from the second bracket with the power of 4.

[faint viper]

.

[velvet dagger]

Which paper is this?

[bleak stump]

i keep getting not this

[bleak stump]

this a real paper?

[versed bay]

2023 shadow paper

[faint viper]

2023 shadow ye

[faint viper]

i think you just typed into calculator wrong because your second last line simplifies to the correct answer

[bleak stump]

i see thanks

[bleak stump]

i get a cfft of x^6 wrong

or am i trippin

[faint viper]

i wrote what u had in my calculator and it gave the right coefficient