Master The L’Hopital’S Rule With This Math Tutorial To Evaluate Limits Of Trigonometric Functions

lim x->0 sinbx/x

b

To evaluate this limit, we can use the L’Hopital’s rule. However, before we do that, we need to simplify the expression by multiplying and dividing by the conjugate:

lim x->0 [(sin bx/x) * (bx)/(bx)]

Now, the numerator and denominator are the same, so we can rewrite the expression as:

lim x->0 [(sin bx – bx)/x * -(1/bx)]

Applying L’Hopital’s rule, we take the derivative of the numerator and denominator separately:

lim x->0 [(b cos bx – b)/1 * -(1/bx)]
= lim x->0 [(cos bx – 1)/x * -1]
= -b lim x->0 [(sin bx)/bx * 1/x]
= -b

Therefore, the limit of sinbx/x as x approaches 0 is equal to -b.

More Answers:
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Solving Limits: Using L’Hopital’S Rule To Find The Limit Of (1 – Cosx)/X
How To Evaluate The Limit Of Sin(X)/X Using The Squeeze Theorem

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