24. Using power series expansion about 0, find cosx by differentiating from sinx. a. 1 (x^2/2!) + (x^4/4!) - (x^6/6!) + b. x-(x^2/2!) + (x^4/4!) = (x^6/6!) + c. 1(x^3/3!) + (x^5/5!) - (x^7/7!) + d. x-(x^3/3!) + (x^5/5!) - (x^7/7!) + ...

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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24. Using power series expansion about 0, find cosx by differentiating from sinx.
a. 1 (x^2/2!) + (x^4/4!) - (x^6/6!) +
b. x-(x^2/2!) + (x^4/4!) — (x^6/6!) +
c. 1(x^3/3!) + (x^5/5!) - (x^7/7!) +
d. x-(x^3/3!) + (x^5/5!) - (x^7/7!) +
...
Transcribed Image Text:24. Using power series expansion about 0, find cosx by differentiating from sinx. a. 1 (x^2/2!) + (x^4/4!) - (x^6/6!) + b. x-(x^2/2!) + (x^4/4!) — (x^6/6!) + c. 1(x^3/3!) + (x^5/5!) - (x^7/7!) + d. x-(x^3/3!) + (x^5/5!) - (x^7/7!) + ...
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