Q59 of 354 Page 12

If prove that

Taking logon both sides,

Log x = log

log x = ……(i) [ Since log = a]

or, y = ……(ii)

Differentiating the given equation with respect to x,

[ From (i)]

[From (ii)]

Therefore,

If cos y = x cos (a + y), where prove that

If prove that:

If find