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`        1/2!+1/4!+1/6!........ upto n terms find the sum of the series`
one year ago

2014 Points
```							let S=1/2!+1/4!+1/6!........now, we know that e^x= 1+x/1!+x^2/2!+x^3/3!+x^4/4!+.....put x=1 and -1 successivelye= 1+1/1!+1/2!+1/3!+1/4!+...and e^-1= 1 – 1/1!+1/2! – 1/3!+....add the two eqnse+1/e= 2(1+1/2!+1/4!+1/6!........)or e+1/e= 2(1+S)or S= [(e+1/e)/2] – 1
```
one year ago
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Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions