निम्नलिखित फलनों के अवकलन ज्ञात कीजिए l
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dy/dx = Cos2x यदि y = SinxCosx
Step-by-step explanation:
d(uv)/dx = udv/dx + vdu/dx
y = SinxCosx
अवकलन करने पर
dy/dx = Sinx d(Cosx)/dx + Cosx d(Sinx)/dx
dSinx/dx = Cosx
dCosx/dx = - Sinx
=> dy/dx = Sinx (-Sinx) + Cosx(Cosx)
=> dy/dx = -Sin²x + Cos²x
=> dy/dx = Cos²x - Sin²x
=> dy/dx = Cos2x
dy/dx = Cos2x यदि y = SinxCosx
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