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Use tables of reciprocals to find the reciprocal of 0.3758. Hence find the value [3]0.1250.3758 correct to 4.S.f
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4 stepsHuu hapa ni ufumbuzi wa swali la 14:
Pata reciprocal ya 0.3758.
Reciprocal ya namba ni .
Kwa kuwa hatuna jedwali la reciprocals, tutatumia hesabu ya moja kwa moja (ambayo ingetoa thamani sawa na jedwali):Kuzungusha hadi tarakimu 4 muhimu (4 s.f.):
Pata thamani ya .
Tafuta thamani ya .
Sasa tunaweza kubadilisha thamani tulizopata kwenye usemi:
Hii pia inaweza kuandikwa kama .
Kutumia thamani kamili zaidi ya reciprocal kutoka Hatua ya 1:Zungusha jibu hadi tarakimu 4 muhimu (4 s.f.).
Tarakimu 4 za kwanza za 1.330500266 ni . Tarakimu ya tano ni 5, kwa hivyo tunazungusha tarakimu ya nne (0) kwenda juu.
Kwa hiyo,
Reciprocal ya 0.3758 ni (kwa 4 s.f.).
Na thamani ya usemi ni:
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