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ICSE Class 10 Answered

Solve  sum b Plz dont give any link of other solved sum
question image
Asked by lovemaan5500 | 13 Jan, 2018, 03:11: PM
answered-by-expert Expert Answer
begin mathsize 16px style According space to space the space question
straight t subscript straight m equals 1 over straight n
straight a plus left parenthesis straight m minus 1 right parenthesis straight d equals 1 over straight n
an plus straight n left parenthesis straight m minus 1 right parenthesis straight d equals 1.......... left parenthesis 1 right parenthesis
straight t subscript straight n equals 1 over straight m
straight a plus left parenthesis straight n minus 1 right parenthesis straight d equals 1 over straight m
am plus straight m left parenthesis straight n minus 1 right parenthesis straight d equals 1........ left parenthesis 2 right parenthesis
Subtracting space left parenthesis 2 right parenthesis space from space left parenthesis 1 right parenthesis
left parenthesis straight m minus 1 right parenthesis straight d minus left parenthesis straight n minus 1 right parenthesis straight d equals 1 over straight n minus 1 over straight m
left parenthesis straight m minus straight n right parenthesis straight d equals 1 over straight n minus 1 over straight m
straight d equals 1 over mn.............. left parenthesis 3 right parenthesis
From space left parenthesis 1 right parenthesis space and space left parenthesis 2 right parenthesis
an plus straight n left parenthesis straight m minus 1 right parenthesis straight d equals am plus straight m left parenthesis straight n minus 1 right parenthesis straight d
straight a left parenthesis straight n minus straight m right parenthesis equals left parenthesis straight n minus straight m right parenthesis straight d
straight a equals straight d
straight a equals straight d equals 1 over mn.............. from space left parenthesis 3 right parenthesis
straight t subscript mn equals straight a plus left parenthesis mn minus 1 right parenthesis straight d
straight t subscript mn equals 1 over mn plus left parenthesis mn minus 1 right parenthesis 1 over mn
straight t subscript mn equals 1 over mn plus 1 minus 1 over mn
straight t subscript mn equals 1



NOTE colon space
Please space check space your space question.


end style
Answered by Sneha shidid | 16 Jan, 2018, 09:36: AM

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