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y=√sinx by first principal

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y=√sinx by first principal

    • Posted by Vaibhav Mishra 6 years, 11 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Suman Thapa 6 years, 11 months ago

    f(x)=f(x+h)-f(x)÷h =sin(x+h)-sinx÷h =Applied S-S=2CS =2cos(2x+h÷2).sin(h÷2)÷h take LCM with h÷2 =cos(2x+h÷2).sin(h÷2)÷(Divide ) h÷2 =cos(2x+h÷2).sin(h÷2)÷h÷2 [sin(h÷2)÷h÷2=1] =limh~0 cos(2x+h÷2) .1 Ans:cosx

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